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CVE-2012-5830

Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11,...

8.8 HighFix available

Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 on Mac OS X allows remote attackers to execute arbitrary code via an HTML document.

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

3.81%Down 5.0 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 8.8

Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 on Mac OS X allows remote attackers to execute arbitrary code via an HTML document.

Record
CVE-2012-5830
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
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-416
Updated
2026-11-02
CVE List No score

Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 on Mac OS X allows remote attackers to execute arbitrary code via an HTML document.

Record
CVE-2012-5830
Updated
2026-11-02
EUVDEUVD-2012-5708 No score

Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 on Mac OS X allows remote attackers to execute arbitrary code via an HTML document.

Record
EUVD-2012-5708
Updated
2026-11-03
GitHub AdvisoriesGHSA-8g8g-2rjp-3346 8.8

Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11,...

Use-after-free vulnerability in Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14 on Mac OS X allows remote attackers to execute arbitrary code via an HTML document.

Record
GHSA-8g8g-2rjp-3346
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
OSVopenSUSE-SU-2024:10071-1 No score

MozillaFirefox-50.1.0-1.1 on GA media

These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10071-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10218-1 No score

seamonkey-2.40-6.1 on GA media

These are all security issues fixed in the seamonkey-2.40-6.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10218-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10230-1 No score

MozillaThunderbird-45.5.1-1.1 on GA media

These are all security issues fixed in the MozillaThunderbird-45.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10230-1
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

Affected products

Show 2 moreShow less

Affected packages

Affected packages
PackageAffectedFixed
firefox
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
firefox-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner
Red Hat:enterprise_linux:5::client_workstation
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client_workstation
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner-devel
Red Hat:enterprise_linux:5::client_workstation
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
firefox
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
firefox-debuginfo
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
Show 35 moreShow less
Affected packages
PackageAffectedFixed
xulrunner-debuginfo
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
xulrunner-devel
Red Hat:enterprise_linux:5::server
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
firefox
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
thunderbird
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
thunderbird-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
thunderbird
Red Hat:rhel_productivity:5
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
thunderbird-debuginfo
Red Hat:rhel_productivity:5
 before 0:10.0.11-1.el5_8
0:10.0.11-1.el5_8
thunderbird
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
thunderbird-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
thunderbird
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
thunderbird-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
thunderbird
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
thunderbird-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.11-1.el6_3
0:10.0.11-1.el6_3
MozillaFirefox
openSUSE:Tumbleweed
 before 50.1.0-1.1
50.1.0-1.1
MozillaThunderbird
openSUSE:Tumbleweed
 before 45.5.1-1.1
45.5.1-1.1
firefox-esr
openSUSE:Tumbleweed
 before 128.5.1-1.1
128.5.1-1.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2012-5830 is a high vulnerability (CVSS 8.8) in Mozilla Firefox, published November 21, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.81%, the 90th percentile. Fixed in firefox 0:10.0.11-1.el5_8.

References

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Left out here: 1,994 references. The JSON record has them.

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