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CVE-2020-26950

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions...

8.8 HighPublic exploitFix available

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

42.3%Up 41.7 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Record
CVE-2020-26950
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness
CWE-416
Updated
2026-11-02
CVE List No score

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Record
CVE-2020-26950
Updated
2026-11-02
EUVDEUVD-2020-19474 No score

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Record
EUVD-2020-19474
Updated
2026-11-03
GitHub AdvisoriesGHSA-cp22-2989-32j9 8.8

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions...

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Record
GHSA-cp22-2989-32j9
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-416
Updated
2026-11-02
OSVALPINE-CVE-2020-26950 8.8

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Record
ALPINE-CVE-2020-26950
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-03
OSV 8.8

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Record
CVE-2020-26950
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
Show 32 moreShow less
OSVDEBIAN-CVE-2020-26950 8.8

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Record
DEBIAN-CVE-2020-26950
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2023-1673 10.0

firefox security update

Mozilla Firefox is a standalone web browser, designed for standards compliance and performance. Its functionality can be enhanced via a plethora of extensions.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.

Security Fix(es):

Mozilla developers reported memory safety bugs present in Firefox for Android 79. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80.(CVE-2020-15670)

Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.(CVE-2020-15673)

Mozilla developers reported memory safety bugs present in Firefox 80. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 81.(CVE-2020-15674)

When processing surfaces, the lifetime may outlive a persistent buffer leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 81.(CVE-2020-15675)

If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an attacker to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.(CVE-2020-15680)

When multiple WASM threads had a reference to a module, and were looking up exported functions, one WASM thread could have overwritten another's entry in a shared stub table, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 82.(CVE-2020-15681)

When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in. An attacker could induce that prompt to be associated with an origin they didn't control, resulting in a spoofing attack. This was fixed by changing external protocol prompts to be tab-modal while also ensuring they could not be incorrectly associated with a different origin. This vulnerability affects Firefox < 82.(CVE-2020-15682)

Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.(CVE-2020-15683)

Mozilla developers reported memory safety bugs present in Firefox 81. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 82.(CVE-2020-15684)

Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to leak cross-origin data via a crafted HTML page.(CVE-2020-16012)

Use after free in WebRTC in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted SCTP packet.(CVE-2020-16044)

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.(CVE-2020-26950)

(CVE-2020-26951)

(CVE-2020-26953) …

Record
OESA-2023-1673
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2023-1674 10.0

firefox security update

Mozilla Firefox is a standalone web browser, designed for standards compliance and performance. Its functionality can be enhanced via a plethora of extensions.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.

Security Fix(es):

Mozilla developers reported memory safety bugs present in Firefox for Android 79. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 80, Firefox ESR < 78.2, Thunderbird < 78.2, and Firefox for Android < 80.(CVE-2020-15670)

Mozilla developers reported memory safety bugs present in Firefox 80 and Firefox ESR 78.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.(CVE-2020-15673)

Mozilla developers reported memory safety bugs present in Firefox 80. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 81.(CVE-2020-15674)

When processing surfaces, the lifetime may outlive a persistent buffer leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 81.(CVE-2020-15675)

If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an attacker to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.(CVE-2020-15680)

When multiple WASM threads had a reference to a module, and were looking up exported functions, one WASM thread could have overwritten another's entry in a shared stub table, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 82.(CVE-2020-15681)

When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in. An attacker could induce that prompt to be associated with an origin they didn't control, resulting in a spoofing attack. This was fixed by changing external protocol prompts to be tab-modal while also ensuring they could not be incorrectly associated with a different origin. This vulnerability affects Firefox < 82.(CVE-2020-15682)

Mozilla developers and community members reported memory safety bugs present in Firefox 81 and Firefox ESR 78.3. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 78.4, Firefox < 82, and Thunderbird < 78.4.(CVE-2020-15683)

Mozilla developers reported memory safety bugs present in Firefox 81. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 82.(CVE-2020-15684)

Side-channel information leakage in graphics in Google Chrome prior to 87.0.4280.66 allowed a remote attacker to leak cross-origin data via a crafted HTML page.(CVE-2020-16012)

Use after free in WebRTC in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially exploit heap corruption via a crafted SCTP packet.(CVE-2020-16044)

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.(CVE-2020-26950)

(CVE-2020-26951)

(CVE-2020-26953) …

Record
OESA-2023-1674
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2024-1562 8.8

firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.

Security Fix(es):

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.(CVE-2020-26950)

Record
OESA-2024-1562
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVOESA-2024-1563 8.8

firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance and portability.

Security Fix(es):

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.(CVE-2020-26950)

Record
OESA-2024-1563
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5099 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:5099
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5100 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:5100
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5104 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:5104
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5135 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:5135
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5138 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:5138
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5139 8.8

Red Hat Security Advisory: firefox security update

Record
RHSA-2020:5139
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5146 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:5146
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5162 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:5162
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5163 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:5163
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5164 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:5164
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5166 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:5166
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVRHSA-2020:5167 8.8

Red Hat Security Advisory: thunderbird security update

Record
RHSA-2020:5167
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2020-26950 8.8

In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.

Record
UBUNTU-CVE-2020-26950
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVMGASA-2020-0421 No score

Updated firefox and thunderbird packages fix a security vulnerability

Write side effects in MCallGetProperty opcode not accounted for. In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. (CVE-2020-26950)

Also some bugfix for Thunderbird have been added. See upstream release notes.

Record
MGASA-2020-0421
Updated
2026-11-02
OSVopenSUSE-SU-2020:1909-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.4.1 ESR
    • Fixed: Security fix MFSA 2020-49 (bsc#1178588)
    • CVE-2020-26950 (bmo#1675905) Write side effects in MCallGetProperty opcode not accounted for

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:1909-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:1919-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.4.1 ESR
    • Fixed: Security fix MFSA 2020-49 (bsc#1178588)
    • CVE-2020-26950 (bmo#1675905) Write side effects in MCallGetProperty opcode not accounted for

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:1919-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:2022-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues:

  • Mozilla Thunderbird 78.4.2 MFSA 2020-49 (bsc#1178611)
    • CVE-2020-26950 (bmo#1675905) Write side effects in MCallGetProperty opcode not accounted for
  • Mozilla Thunderbird 78.4.1
    • new: Thunderbird prompts for an address to use when starting an email from an address book entry with multiple addresses (bmo#84028)
    • fixed: Searching global search results did not work (bmo#1664761)
    • fixed: Link location was not focused by default when adding a hyperlink in message composer (bmo#1670660)
    • fixed: Advanced address book search dialog was unusable (bmo#1668147)
    • fixed: Encrypted draft reply emails lost 'Re:' prefix (bmo#1661510)
    • fixed: Replying to a newsgroup message did not open the compose window (bmo#1672667)
    • fixed: Unable to delete multiple newsgroup messages (bmo#1657988)
    • fixed: Appmenu displayed visual glitches (bmo#1636243)
    • fixed: Visual glitches when selecting multiple messages in the message pane and using Ctrl+click (bmo#1671800)
    • fixed: Switching between dark and light mode could lead to unreadable text on macOS (bmo#1668989)

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:2022-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:2133-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues:

  • Mozilla Thunderbird 78.4.2 MFSA 2020-49 (bsc#1178611)
    • CVE-2020-26950 (bmo#1675905) Write side effects in MCallGetProperty opcode not accounted for
  • Mozilla Thunderbird 78.4.1
    • new: Thunderbird prompts for an address to use when starting an email from an address book entry with multiple addresses (bmo#84028)
    • fixed: Searching global search results did not work (bmo#1664761)
    • fixed: Link location was not focused by default when adding a hyperlink in message composer (bmo#1670660)
    • fixed: Advanced address book search dialog was unusable (bmo#1668147)
    • fixed: Encrypted draft reply emails lost 'Re:' prefix (bmo#1661510)
    • fixed: Replying to a newsgroup message did not open the compose window (bmo#1672667)
    • fixed: Unable to delete multiple newsgroup messages (bmo#1657988)
    • fixed: Appmenu displayed visual glitches (bmo#1636243)
    • fixed: Visual glitches when selecting multiple messages in the message pane and using Ctrl+click (bmo#1671800)
    • fixed: Switching between dark and light mode could lead to unreadable text on macOS (bmo#1668989)

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:2133-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10600-1 No score

MozillaFirefox-92.0-1.2 on GA media

These are all security issues fixed in the MozillaFirefox-92.0-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10600-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10601-1 No score

MozillaThunderbird-91.1.1-1.1 on GA media

These are all security issues fixed in the MozillaThunderbird-91.1.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10601-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:14572-1 No score

firefox-esr-128.5.1-1.1 on GA media

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:14572-1
Updated
2026-11-02
OSVSUSE-SU-2020:14542-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.4.1 ESR
    • Fixed: Security fix MFSA 2020-49 (bsc#1178588)
    • CVE-2020-26950 (bmo#1675905) Write side effects in MCallGetProperty opcode not accounted for
Record
SUSE-SU-2020:14542-1
Updated
2026-11-02
OSVSUSE-SU-2020:3311-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.4.1 ESR
    • Fixed: Security fix MFSA 2020-49 (bsc#1178588)
    • CVE-2020-26950 (bmo#1675905) Write side effects in MCallGetProperty opcode not accounted for
Record
SUSE-SU-2020:3311-1
Updated
2026-11-02
OSVSUSE-SU-2020:3312-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.4.1 ESR
    • Fixed: Security fix MFSA 2020-49 (bsc#1178588)
    • CVE-2020-26950 (bmo#1675905) Write side effects in MCallGetProperty opcode not accounted for
Record
SUSE-SU-2020:3312-1
Updated
2026-11-02
OSVSUSE-SU-2020:3331-1 No score

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

  • Firefox Extended Support Release 78.4.1 ESR
    • Fixed: Security fix MFSA 2020-49 (bsc#1178588)
    • CVE-2020-26950 (bmo#1675905) Write side effects in MCallGetProperty opcode not accounted for
Record
SUSE-SU-2020:3331-1
Updated
2026-11-02
OSVSUSE-SU-2020:3418-1 No score

Security update for MozillaThunderbird

This update for MozillaThunderbird fixes the following issues:

  • Mozilla Thunderbird 78.4.2 MFSA 2020-49 (bsc#1178611)
    • CVE-2020-26950 (bmo#1675905) Write side effects in MCallGetProperty opcode not accounted for
  • Mozilla Thunderbird 78.4.1
    • new: Thunderbird prompts for an address to use when starting an email from an address book entry with multiple addresses (bmo#84028)
    • fixed: Searching global search results did not work (bmo#1664761)
    • fixed: Link location was not focused by default when adding a hyperlink in message composer (bmo#1670660)
    • fixed: Advanced address book search dialog was unusable (bmo#1668147)
    • fixed: Encrypted draft reply emails lost 'Re:' prefix (bmo#1661510)
    • fixed: Replying to a newsgroup message did not open the compose window (bmo#1672667)
    • fixed: Unable to delete multiple newsgroup messages (bmo#1657988)
    • fixed: Appmenu displayed visual glitches (bmo#1636243)
    • fixed: Visual glitches when selecting multiple messages in the message pane and using Ctrl+click (bmo#1671800)
    • fixed: Switching between dark and light mode could lead to unreadable text on macOS (bmo#1668989)
Record
SUSE-SU-2020:3418-1
Updated
2026-11-02
OSVUSN-4625-1 No score

firefox vulnerability

A use-after-free was discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could exploit this to execute arbitrary code.

Record
USN-4625-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
firefox
Alpine:v3.12
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.13
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.14
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.15
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.16
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.17
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.18
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.19
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.20
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.21
 before 82.0.3-r0
82.0.3-r0
Show 137 moreShow less
Affected packages
PackageAffectedFixed
firefox
Alpine:v3.22
 before 82.0.3-r0
82.0.3-r0
firefox
Alpine:v3.23
 before 82.0.3-r0
82.0.3-r0
firefox-esr
Alpine:v3.12
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.13
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.14
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.15
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.16
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.17
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.18
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.19
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.20
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.21
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.22
 before 78.5.0-r0
78.5.0-r0
firefox-esr
Alpine:v3.23
 before 78.5.0-r0
78.5.0-r0
librewolf
Alpine:v3.21
 before 82.0.3-r0
82.0.3-r0
librewolf
Alpine:v3.22
 before 82.0.3-r0
82.0.3-r0
librewolf
Alpine:v3.23
 before 82.0.3-r0
82.0.3-r0
librewolf
Alpine:v3.24
 before 82.0.3-r0
82.0.3-r0
mozjs78
Alpine:v3.13
 before 78.4.1-r0
78.4.1-r0
mozjs78
Alpine:v3.14
 before 78.4.1-r0
78.4.1-r0
mozjs78
Alpine:v3.15
 before 78.4.1-r0
78.4.1-r0
mozjs78
Alpine:v3.16
 before 78.4.1-r0
78.4.1-r0
thunderbird
Alpine:v3.16
 before 78.5.1-r0
78.5.1-r0
thunderbird
Alpine:v3.17
 before 78.5.1-r0
78.5.1-r0
thunderbird
Alpine:v3.18
 before 78.5.1-r0
78.5.1-r0
thunderbird
Alpine:v3.19
 before 78.5.1-r0
78.5.1-r0
thunderbird
Alpine:v3.20
 before 78.5.1-r0
78.5.1-r0
thunderbird
Alpine:v3.21
 before 78.5.1-r0
78.5.1-r0
thunderbird
Alpine:v3.22
 before 78.5.1-r0
78.5.1-r0
thunderbird
Alpine:v3.23
 before 78.5.1-r0
78.5.1-r0
firefox-esr
Debian:12
 before 78.4.1esr-1
78.4.1esr-1
firefox-esr
Debian:13
 before 78.4.1esr-1
78.4.1esr-1
firefox-esr
Debian:14
 before 78.4.1esr-1
78.4.1esr-1
thunderbird
Debian:12
 before 1:78.4.2-1
1:78.4.2-1
thunderbird
Debian:13
 before 1:78.4.2-1
1:78.4.2-1
thunderbird
Debian:14
 before 1:78.4.2-1
1:78.4.2-1
firefox-esr
Debian:9
 before 78.4.1esr-1~deb9u1, plus listed versions
45.9.0esr-152.0.1esr-152.0.2esr-152.0esr-152.1.0esr-1
Show 45 moreShow less
52.2.0esr-152.2.0esr-1~deb7u152.2.0esr-1~deb8u152.2.0esr-1~deb9u152.2.0esr-252.3.0esr-152.3.0esr-1~deb7u152.3.0esr-1~deb8u152.3.0esr-1~deb8u252.3.0esr-1~deb9u152.3.0esr-252.4.0esr-1~deb8u152.4.0esr-1~deb9u152.4.0esr-252.4.0esr-2~deb7u152.5.0esr-152.5.0esr-1~deb7u152.5.0esr-1~deb8u152.5.0esr-1~deb9u152.5.2esr-152.5.2esr-1~deb7u152.5.2esr-1~deb8u152.5.2esr-1~deb9u152.5.3esr-152.6.0esr-152.6.0esr-1~deb7u152.6.0esr-1~deb8u152.6.0esr-1~deb9u152.6.0esr-252.6.0esr-2+alpha.152.6.0esr-2+alpha.252.7.0esr-152.7.0esr-1~deb8u152.7.0esr-1~deb9u152.7.1esr-152.7.1esr-1~deb7u152.7.1esr-1~deb8u152.7.1esr-1~deb9u152.7.2esr-152.7.2esr-1~deb7u152.7.2esr-1~deb8u152.7.2esr-1~deb9u152.7.3esr-152.7.3esr-1~deb7u152.7.3esr-1~deb8u1
78.4.1esr-1~deb9u1
thunderbird
Debian:9
 before 1:78.4.2-1~deb9u1, plus listed versions
1.5-41.5.0.2-11.5.0.2-21.5.0.2-31.5.0.4-1
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1.5.0.4-21.5.0.4-31.5.0.5-11.5.0.7-11.5.0.7-21:52.4.0-11:52.4.0-1~deb7u11:52.4.0-1~deb8u11:52.4.0-1~deb9u11:52.4.0-2~exp11:52.5.0-11:52.5.0-1~deb7u11:52.5.0-1~deb8u11:52.5.0-1~deb9u11:52.5.2-11:52.5.2-1~deb7u11:52.5.2-21:52.5.2-2~deb8u11:52.5.2-2~deb9u11:52.6.0-11:52.6.0-1+alpha.11:52.6.0-1+alpha.21:52.6.0-1~deb7u11:52.6.0-1~deb8u11:52.6.0-1~deb9u11:52.7.0-11:52.7.0-1~deb7u11:52.7.0-1~deb8u11:52.7.0-1~deb9u11:52.8.0-11:52.8.0-1~deb7u11:52.8.0-1~deb8u11:52.8.0-1~deb9u11:52.9.0-11:52.9.1-11:52.9.1-1~deb8u11:52.9.1-1~deb9u11:58.0~b3-11:60.0-11:60.0-21:60.0-2~deb9u11:60.0-31:60.0-3~deb9u11:60.0~b10-11:60.0~b2-1
1:78.4.2-1~deb9u1
firefox-esr
Debian:10
 before 78.4.1esr-1~deb10u1, plus listed versions
60.7.2esr-160.8.0esr-160.8.0esr-1~deb10u160.8.0esr-1~deb8u160.8.0esr-1~deb9u1
Show 45 moreShow less
60.9.0esr-1~deb10u160.9.0esr-1~deb8u160.9.0esr-1~deb8u260.9.0esr-1~deb9u168.0.2esr-168.1.0esr-168.10.0esr-168.10.0esr-1~deb10u168.10.0esr-1~deb9u168.11.0esr-168.11.0esr-1~deb10u168.11.0esr-1~deb9u168.12.0esr-168.12.0esr-1~deb10u168.12.0esr-1~deb9u168.2.0esr-168.2.0esr-1~deb10u168.2.0esr-1~deb8u168.2.0esr-1~deb9u168.2.0esr-1~deb9u268.3.0esr-168.3.0esr-1~deb10u168.3.0esr-1~deb8u168.3.0esr-1~deb9u168.4.0esr-168.4.0esr-1~deb10u168.4.0esr-1~deb8u168.4.0esr-1~deb9u168.4.1esr-168.4.1esr-1~deb10u168.4.1esr-1~deb8u168.4.1esr-1~deb9u168.4.2esr-168.5.0esr-168.5.0esr-1~deb10u168.5.0esr-1~deb8u168.5.0esr-1~deb9u168.6.0esr-168.6.0esr-1~deb10u168.6.0esr-1~deb8u168.6.0esr-1~deb9u168.6.1esr-168.6.1esr-1~deb10u168.6.1esr-1~deb9u168.7.0esr-1
78.4.1esr-1~deb10u1
thunderbird
Debian:10
 before 1:78.4.2-1~deb10u1, plus listed versions
1:60.7.2-11:60.8.0-11:60.8.0-1~deb10u11:60.8.0-1~deb8u11:60.8.0-1~deb9u1
Show 45 moreShow less
1:60.8.0-21:60.9.0-11:60.9.0-1~deb10u11:60.9.0-1~deb8u11:60.9.0-1~deb9u11:65.0~b1-11:66.0~b1-11:67.0~b3-11:68.0~b1-11:68.1.1-1~exp11:68.1.2-1~exp11:68.10.0-11:68.10.0-1~deb10u11:68.10.0-1~deb9u11:68.11.0-11:68.11.0-1~deb10u11:68.11.0-1~deb9u11:68.11.0-21:68.11.0-31:68.12.0-11:68.12.0-1~deb10u11:68.12.0-1~deb9u11:68.12.0-1~deb9u21:68.2.1-11:68.2.2-11:68.2.2-1~deb10u11:68.2.2-1~deb8u11:68.2.2-1~deb9u11:68.3.0-11:68.3.0-21:68.3.0-2~deb10u11:68.3.0-2~deb8u11:68.3.0-2~deb9u11:68.3.1-11:68.4.1-11:68.4.1-1~deb10u11:68.4.1-1~deb8u11:68.4.1-1~deb9u11:68.4.2-11:68.5.0-11:68.5.0-1~deb10u11:68.5.0-1~deb8u11:68.5.0-1~deb9u11:68.6.0-11:68.6.0-1~deb10u1
1:78.4.2-1~deb10u1
firefox
Mageia:7
 before 78.4.1-1.mga7
78.4.1-1.mga7
firefox-l10n
Mageia:7
 before 78.4.1-1.mga7
78.4.1-1.mga7
thunderbird
Mageia:7
 before 78.4.2-1.mga7
78.4.2-1.mga7
thunderbird-l10n
Mageia:7
 before 78.4.2-1.mga7
78.4.2-1.mga7
firefox
openEuler:22.03-LTS
From an advisory covering 289 CVEs
 before 102.14.0-1.oe2203
102.14.0-1.oe2203
firefox
openEuler:22.03-LTS-SP1
From an advisory covering 289 CVEs
 before 102.14.0-1.oe2203sp1
102.14.0-1.oe2203sp1
firefox
openEuler:20.03-LTS-SP1
 before 79.0-19.oe1
79.0-19.oe1
firefox
openEuler:20.03-LTS-SP4
 before 79.0-19.oe2003sp4
79.0-19.oe2003sp4
firefox
Red Hat:enterprise_linux:7::client
 before 0:78.4.1-1.el7_9
0:78.4.1-1.el7_9
firefox-debuginfo
Red Hat:enterprise_linux:7::client
 before 0:78.4.1-1.el7_9
0:78.4.1-1.el7_9
firefox
Red Hat:enterprise_linux:7::server
 before 0:78.4.1-1.el7_9
0:78.4.1-1.el7_9
firefox-debuginfo
Red Hat:enterprise_linux:7::server
 before 0:78.4.1-1.el7_9
0:78.4.1-1.el7_9
firefox
Red Hat:enterprise_linux:7::workstation
 before 0:78.4.1-1.el7_9
0:78.4.1-1.el7_9
firefox-debuginfo
Red Hat:enterprise_linux:7::workstation
 before 0:78.4.1-1.el7_9
0:78.4.1-1.el7_9
firefox
Red Hat:enterprise_linux:8::appstream
 before 0:78.4.1-1.el8_3
0:78.4.1-1.el8_3
firefox-debuginfo
Red Hat:enterprise_linux:8::appstream
 before 0:78.4.1-1.el8_3
0:78.4.1-1.el8_3
firefox-debugsource
Red Hat:enterprise_linux:8::appstream
 before 0:78.4.1-1.el8_3
0:78.4.1-1.el8_3
firefox
Red Hat:enterprise_linux:6::client
 before 0:78.4.1-1.el6_10
0:78.4.1-1.el6_10
firefox-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:78.4.1-1.el6_10
0:78.4.1-1.el6_10
firefox
Red Hat:enterprise_linux:6::computenode
 before 0:78.4.1-1.el6_10
0:78.4.1-1.el6_10
firefox-debuginfo
Red Hat:enterprise_linux:6::computenode
 before 0:78.4.1-1.el6_10
0:78.4.1-1.el6_10
firefox
Red Hat:enterprise_linux:6::server
 before 0:78.4.1-1.el6_10
0:78.4.1-1.el6_10
firefox-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:78.4.1-1.el6_10
0:78.4.1-1.el6_10
firefox
Red Hat:enterprise_linux:6::workstation
 before 0:78.4.1-1.el6_10
0:78.4.1-1.el6_10
firefox-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:78.4.1-1.el6_10
0:78.4.1-1.el6_10
firefox
Red Hat:rhel_eus:8.1::appstream
 before 0:78.4.1-1.el8_1
0:78.4.1-1.el8_1
firefox-debuginfo
Red Hat:rhel_eus:8.1::appstream
 before 0:78.4.1-1.el8_1
0:78.4.1-1.el8_1
firefox-debugsource
Red Hat:rhel_eus:8.1::appstream
 before 0:78.4.1-1.el8_1
0:78.4.1-1.el8_1
firefox
Red Hat:rhel_e4s:8.0::appstream
 before 0:78.4.1-1.el8_0
0:78.4.1-1.el8_0
firefox-debuginfo
Red Hat:rhel_e4s:8.0::appstream
 before 0:78.4.1-1.el8_0
0:78.4.1-1.el8_0
firefox-debugsource
Red Hat:rhel_e4s:8.0::appstream
 before 0:78.4.1-1.el8_0
0:78.4.1-1.el8_0
firefox
Red Hat:rhel_eus:8.2::appstream
 before 0:78.4.1-1.el8_2
0:78.4.1-1.el8_2
firefox-debuginfo
Red Hat:rhel_eus:8.2::appstream
 before 0:78.4.1-1.el8_2
0:78.4.1-1.el8_2
firefox-debugsource
Red Hat:rhel_eus:8.2::appstream
 before 0:78.4.1-1.el8_2
0:78.4.1-1.el8_2
thunderbird
Red Hat:enterprise_linux:8::appstream
 before 0:78.4.3-1.el8_3
0:78.4.3-1.el8_3
thunderbird-debuginfo
Red Hat:enterprise_linux:8::appstream
 before 0:78.4.3-1.el8_3
0:78.4.3-1.el8_3
thunderbird-debugsource
Red Hat:enterprise_linux:8::appstream
 before 0:78.4.3-1.el8_3
0:78.4.3-1.el8_3
thunderbird
Red Hat:rhel_eus:8.2::appstream
 before 0:78.4.3-1.el8_2
0:78.4.3-1.el8_2
thunderbird-debuginfo
Red Hat:rhel_eus:8.2::appstream
 before 0:78.4.3-1.el8_2
0:78.4.3-1.el8_2
thunderbird-debugsource
Red Hat:rhel_eus:8.2::appstream
 before 0:78.4.3-1.el8_2
0:78.4.3-1.el8_2
thunderbird
Red Hat:enterprise_linux:7::client
 before 0:78.4.3-1.el7_9
0:78.4.3-1.el7_9
thunderbird-debuginfo
Red Hat:enterprise_linux:7::client
 before 0:78.4.3-1.el7_9
0:78.4.3-1.el7_9
thunderbird
Red Hat:enterprise_linux:7::server
 before 0:78.4.3-1.el7_9
0:78.4.3-1.el7_9
thunderbird-debuginfo
Red Hat:enterprise_linux:7::server
 before 0:78.4.3-1.el7_9
0:78.4.3-1.el7_9
thunderbird
Red Hat:enterprise_linux:7::workstation
 before 0:78.4.3-1.el7_9
0:78.4.3-1.el7_9
thunderbird-debuginfo
Red Hat:enterprise_linux:7::workstation
 before 0:78.4.3-1.el7_9
0:78.4.3-1.el7_9
thunderbird
Red Hat:enterprise_linux:6::client
 before 0:78.4.3-1.el6_10
0:78.4.3-1.el6_10
thunderbird-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:78.4.3-1.el6_10
0:78.4.3-1.el6_10
thunderbird
Red Hat:enterprise_linux:6::server
 before 0:78.4.3-1.el6_10
0:78.4.3-1.el6_10
thunderbird-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:78.4.3-1.el6_10
0:78.4.3-1.el6_10
thunderbird
Red Hat:enterprise_linux:6::workstation
 before 0:78.4.3-1.el6_10
0:78.4.3-1.el6_10
thunderbird-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:78.4.3-1.el6_10
0:78.4.3-1.el6_10
thunderbird
Red Hat:rhel_eus:8.1::appstream
 before 0:78.4.3-1.el8_1
0:78.4.3-1.el8_1
thunderbird-debuginfo
Red Hat:rhel_eus:8.1::appstream
 before 0:78.4.3-1.el8_1
0:78.4.3-1.el8_1
thunderbird-debugsource
Red Hat:rhel_eus:8.1::appstream
 before 0:78.4.3-1.el8_1
0:78.4.3-1.el8_1
thunderbird
Red Hat:rhel_e4s:8.0::appstream
 before 0:78.4.3-1.el8_0
0:78.4.3-1.el8_0
thunderbird-debuginfo
Red Hat:rhel_e4s:8.0::appstream
 before 0:78.4.3-1.el8_0
0:78.4.3-1.el8_0
thunderbird-debugsource
Red Hat:rhel_e4s:8.0::appstream
 before 0:78.4.3-1.el8_0
0:78.4.3-1.el8_0
MozillaFirefox
SUSE:Linux Enterprise Server 11 SP4-LTSS
 before 78.4.1-78.102.1
78.4.1-78.102.1
MozillaFirefox
SUSE:Linux Enterprise Module for Desktop Applications 15 SP1
 before 78.4.1-3.116.1
78.4.1-3.116.1
MozillaFirefox
SUSE:Linux Enterprise Module for Desktop Applications 15 SP2
 before 78.4.1-8.14.1
78.4.1-8.14.1
MozillaFirefox
SUSE:HPE Helion OpenStack 8
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:OpenStack Cloud 7
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:OpenStack Cloud 8
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:OpenStack Cloud 9
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:OpenStack Cloud Crowbar 8
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:OpenStack Cloud Crowbar 9
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP4
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Software Development Kit 12 SP5
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP2-LTSS
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP2-BCL
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP3-LTSS
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP3-BCL
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP4-LTSS
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server 12 SP5
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaFirefox
SUSE:Enterprise Storage 5
 before 78.4.1-112.32.1
78.4.1-112.32.1
MozillaThunderbird
SUSE:Linux Enterprise Workstation Extension 15 SP1
 before 78.4.2-3.103.2
78.4.2-3.103.2
MozillaThunderbird
SUSE:Linux Enterprise Workstation Extension 15 SP2
 before 78.4.2-3.103.2
78.4.2-3.103.2
firefox
Ubuntu:16.04:LTS
 before 82.0.3+build1-0ubuntu0.16.04.1, plus listed versions
41.0.2+build2-0ubuntu142.0+build2-0ubuntu144.0+build3-0ubuntu244.0.1+build1-0ubuntu144.0.2+build1-0ubuntu1
Show 45 moreShow less
45.0+build2-0ubuntu145.0.1+build1-0ubuntu145.0.2+build1-0ubuntu146.0+build5-0ubuntu0.16.04.246.0.1+build1-0ubuntu0.16.04.247.0+build3-0ubuntu0.16.04.148.0+build2-0ubuntu0.16.04.149.0+build4-0ubuntu0.16.04.149.0.2+build2-0ubuntu0.16.04.250.0+build2-0ubuntu0.16.04.250.0.2+build1-0ubuntu0.16.04.150.1.0+build2-0ubuntu0.16.04.151.0.1+build2-0ubuntu0.16.04.151.0.1+build2-0ubuntu0.16.04.252.0+build2-0ubuntu0.16.04.152.0.1+build2-0ubuntu0.16.04.152.0.2+build1-0ubuntu0.16.04.153.0+build6-0ubuntu0.16.04.153.0.2+build1-0ubuntu0.16.04.253.0.3+build1-0ubuntu0.16.04.254.0+build3-0ubuntu0.16.04.155.0.1+build2-0ubuntu0.16.04.255.0.2+build1-0ubuntu0.16.04.156.0+build6-0ubuntu0.16.04.156.0+build6-0ubuntu0.16.04.257.0+build4-0ubuntu0.16.04.557.0+build4-0ubuntu0.16.04.657.0.1+build2-0ubuntu0.16.04.157.0.3+build1-0ubuntu0.16.04.157.0.4+build1-0ubuntu0.16.04.158.0+build6-0ubuntu0.16.04.158.0.1+build1-0ubuntu0.16.04.158.0.2+build1-0ubuntu0.16.04.159.0+build5-0ubuntu0.16.04.159.0.1+build1-0ubuntu0.16.04.159.0.2+build1-0ubuntu0.16.04.159.0.2+build1-0ubuntu0.16.04.360.0+build2-0ubuntu0.16.04.160.0.1+build2-0ubuntu0.16.04.160.0.2+build1-0ubuntu0.16.04.161.0+build3-0ubuntu0.16.04.261.0.1+build1-0ubuntu0.16.04.162.0+build2-0ubuntu0.16.04.362.0+build2-0ubuntu0.16.04.462.0+build2-0ubuntu0.16.04.5
82.0.3+build1-0ubuntu0.16.04.1
firefox
Ubuntu:18.04:LTS
 before 82.0.3+build1-0ubuntu0.18.04.1, plus listed versions
56.0+build6-0ubuntu157.0.1+build2-0ubuntu159.0.1+build1-0ubuntu159.0.2+build1-0ubuntu160.0+build2-0ubuntu1
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60.0.1+build2-0ubuntu0.18.04.160.0.2+build1-0ubuntu0.18.04.161.0+build3-0ubuntu0.18.04.161.0.1+build1-0ubuntu0.18.04.162.0+build2-0ubuntu0.18.04.362.0+build2-0ubuntu0.18.04.462.0+build2-0ubuntu0.18.04.562.0.3+build1-0ubuntu0.18.04.163.0+build2-0ubuntu0.18.04.263.0.3+build1-0ubuntu0.18.04.164.0+build3-0ubuntu0.18.04.165.0+build2-0ubuntu0.18.04.165.0.1+build2-0ubuntu0.18.04.166.0+build3-0ubuntu0.18.04.166.0.1+build1-0ubuntu0.18.04.166.0.2+build1-0ubuntu0.18.04.166.0.3+build1-0ubuntu0.18.04.166.0.4+build3-0ubuntu0.18.04.166.0.5+build1-0ubuntu0.18.04.167.0+build2-0ubuntu0.18.04.167.0.1+build1-0ubuntu0.18.04.167.0.2+build2-0ubuntu0.18.04.167.0.3+build1-0ubuntu0.18.04.167.0.4+build1-0ubuntu0.18.04.168.0+build3-0ubuntu0.18.04.168.0.1+build1-0ubuntu0.18.04.168.0.2+build1-0ubuntu0.18.04.169.0+build2-0ubuntu0.18.04.169.0.1+build1-0ubuntu0.18.04.169.0.2+build1-0ubuntu0.18.04.170.0+build2-0ubuntu0.18.04.170.0.1+build1-0ubuntu0.18.04.171.0+build5-0ubuntu0.18.04.172.0.1+build1-0ubuntu0.18.04.172.0.2+build1-0ubuntu0.18.04.173.0+build3-0ubuntu0.18.04.173.0.1+build1-0ubuntu0.18.04.174.0+build3-0ubuntu0.18.04.174.0.1+build1-0ubuntu0.18.04.175.0+build3-0ubuntu0.18.04.176.0+build2-0ubuntu0.18.04.176.0.1+build1-0ubuntu0.18.04.177.0.1+build1-0ubuntu0.18.04.178.0.1+build1-0ubuntu0.18.04.178.0.2+build2-0ubuntu0.18.04.1
82.0.3+build1-0ubuntu0.18.04.1
thunderbird
Ubuntu:18.04:LTS
 before 1:78.8.1+build1-0ubuntu0.18.04.1, plus listed versions
1:52.4.0+build1-0ubuntu21:52.6.0+build1-0ubuntu11:52.7.0+build1-0ubuntu11:52.8.0+build1-0ubuntu0.18.04.11:52.9.1+build3-0ubuntu0.18.04.1
Show 15 moreShow less
1:60.2.1+build1-0ubuntu0.18.04.21:60.4.0+build2-0ubuntu0.18.04.11:60.5.1+build2-0ubuntu0.18.04.11:60.6.1+build2-0ubuntu0.18.04.11:60.7.0+build1-0ubuntu0.18.04.11:60.7.1+build1-0ubuntu0.18.04.11:60.7.2+build2-0ubuntu0.18.04.11:60.8.0+build1-0ubuntu0.18.04.11:60.9.0+build1-0ubuntu0.18.04.11:68.2.1+build1-0ubuntu0.18.04.11:68.2.2+build1-0ubuntu0.18.04.11:68.4.1+build1-0ubuntu0.18.04.11:68.7.0+build1-0ubuntu0.18.04.11:68.8.0+build2-0ubuntu0.18.04.21:68.10.0+build1-0ubuntu0.18.04.1
1:78.8.1+build1-0ubuntu0.18.04.1
mozjs52
Ubuntu:18.04:LTS
 All versions, plus listed versions
52.3.1-0ubuntu352.3.1-7fakesync152.8.1-0ubuntu0.18.04.152.9.1-0ubuntu0.18.04.1
 None known
mozjs38
Ubuntu:18.04:LTS
 All versions, plus listed versions
38.8.0~repack1-0ubuntu138.8.0~repack1-0ubuntu338.8.0~repack1-0ubuntu4
 None known
firefox
Ubuntu:20.04:LTS
 before 82.0.3+build1-0ubuntu0.20.04.1, plus listed versions
69.0.3+build1-0ubuntu170.0+build2-0ubuntu170.0+build2-0ubuntu270.0.1+build1-0ubuntu271.0+build2-0ubuntu2
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71.0+build5-0ubuntu172.0.1+build1-0ubuntu172.0.2+build1-0ubuntu173.0+build1-0ubuntu173.0+build2-0ubuntu173.0+build3-0ubuntu173.0.1+build1-0ubuntu174.0+build1-0ubuntu174.0+build2-0ubuntu174.0+build2-0ubuntu274.0+build3-0ubuntu175.0+build3-0ubuntu176.0+build2-0ubuntu0.20.04.176.0.1+build1-0ubuntu0.20.04.177.0.1+build1-0ubuntu0.20.04.178.0.1+build1-0ubuntu0.20.04.178.0.2+build2-0ubuntu0.20.04.179.0+build1-0ubuntu0.20.04.180.0+build2-0ubuntu0.20.04.180.0.1+build1-0ubuntu0.20.04.181.0+build2-0ubuntu0.20.04.181.0.2+build1-0ubuntu0.20.04.182.0+build2-0ubuntu0.20.04.182.0.2+build1-0ubuntu0.20.04.1
82.0.3+build1-0ubuntu0.20.04.1
thunderbird
Ubuntu:20.04:LTS
 before 1:78.7.1+build1-0ubuntu0.20.04.1, plus listed versions
1:68.1.2+build1-0ubuntu11:68.1.2+build1-0ubuntu21:68.2.1+build1-0ubuntu11:68.2.2+build1-0ubuntu11:68.3.0+build2-0ubuntu1
Show 9 moreShow less
1:68.3.1+build1-0ubuntu21:68.4.1+build1-0ubuntu11:68.4.2+build2-0ubuntu11:68.5.0+build1-0ubuntu11:68.6.0+build2-0ubuntu11:68.7.0+build1-0ubuntu11:68.7.0+build1-0ubuntu21:68.8.0+build2-0ubuntu0.20.04.21:68.10.0+build1-0ubuntu0.20.04.1
1:78.7.1+build1-0ubuntu0.20.04.1
mozjs68
Ubuntu:20.04:LTS
 All versions, plus listed versions
68.5.0-1~fakesync68.5.0-2~fakesync68.6.0-168.6.0-1ubuntu1
 None known
mozjs52
Ubuntu:20.04:LTS
 All versions, plus listed versions
52.9.1-1build152.9.1-1ubuntu3
 None known
MozillaFirefox
openSUSE:Leap 15.1
 before 78.4.1-lp151.2.76.1
78.4.1-lp151.2.76.1
MozillaFirefox
openSUSE:Leap 15.2
 before 78.4.1-lp152.2.27.1
78.4.1-lp152.2.27.1
MozillaThunderbird
openSUSE:Leap 15.2
 before 78.4.2-lp152.2.16.1
78.4.2-lp152.2.16.1
MozillaThunderbird
openSUSE:Leap 15.1
 before 78.4.2-lp151.2.56.1
78.4.2-lp151.2.56.1
MozillaFirefox
openSUSE:Tumbleweed
From an advisory covering 661 CVEs
 before 92.0-1.2
92.0-1.2
MozillaThunderbird
openSUSE:Tumbleweed
From an advisory covering 394 CVEs
 before 91.1.1-1.1
91.1.1-1.1
firefox-esr
openSUSE:Tumbleweed
From an advisory covering 1860 CVEs
 before 128.5.1-1.1
128.5.1-1.1

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
MetasploitFirefox MCallGetProperty Write Side Effects Use After Free Exploit2020-11-18

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, Metasploit, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-26950 is a high vulnerability (CVSS 8.8) in Mozilla Firefox, published November 10, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 42.3%, the 98th percentile. Fixed in firefox 82.0.3-r0.

References

Show 194 moreShow less
This page doesn't list everything

Left out here: 371 versions, 2,097 references and the rest of 2 source descriptions. The JSON record has them.

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