CVE-2021-21191
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to...
8.8 HighFix available
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
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
1.37%Up 0.8 points since Apr 14, 2021
What each source reports
NVD Score used
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- Record
CVE-2021-21191- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV: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 in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- Record
CVE-2021-21191- Updated
- 2026-11-02
EUVDEUVD-2021-8582 No score
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- Record
EUVD-2021-8582- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jc3c-7crw-rhq4 No score
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to...
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- Record
GHSA-jc3c-7crw-rhq4- Weakness
- CWE-416
- Updated
- 2026-11-02
OSVALPINE-CVE-2021-21191
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- Record
ALPINE-CVE-2021-21191- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
OSV
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- Record
CVE-2021-21191- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Show 8 moreShow less
OSVDEBIAN-CVE-2021-21191
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- Record
DEBIAN-CVE-2021-21191- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-21191
Use after free in WebRTC in Google Chrome prior to 89.0.4389.90 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
- Record
UBUNTU-CVE-2021-21191- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVMGASA-2021-0142 No score
Updated chromium-browser-stable packages fix security vulnerability
The updated packages fix security vulnerabilities. At least one of them is known to be actively exploited.
- Record
MGASA-2021-0142- Updated
- 2026-11-02
OSVopenSUSE-SU-2021:0436-1 No score
Security update for chromium
This update for chromium fixes the following issues:
- Chromium was updated to 89.0.4389.90 (boo#1183515)
- CVE-2021-21191: Use after free in WebRTC.
- CVE-2021-21192: Heap buffer overflow in tab groups.
- CVE-2021-21193: Use after free in Blink.
- Record
openSUSE-SU-2021:0436-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2021:0446-1 No score
Security update for chromium
This update for chromium fixes the following issues:
- Chromium was updated to 89.0.4389.90 (boo#1183515)
- CVE-2021-21191: Use after free in WebRTC.
- CVE-2021-21192: Heap buffer overflow in tab groups.
- CVE-2021-21193: Use after free in Blink.
This update was imported from the openSUSE:Leap:15.2:Update update project.
- Record
openSUSE-SU-2021:0446-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2021:0592-1 No score
Security update for opera
This update for opera fixes the following issues:
- Opera was updated to version 75.0.3969.171 (boo#1184256) CVE-2021-21194, CVE-2021-21195, CVE-2021-21196, CVE-2021-21197, CVE-2021-21198, CVE-2021-21199, CVE-2021-21191, CVE-2021-21192, CVE-2021-21193
- Record
openSUSE-SU-2021:0592-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10681-1 No score
chromedriver-93.0.4577.82-1.1 on GA media
These are all security issues fixed in the chromedriver-93.0.4577.82-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10681-1- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:12948-1 No score
ungoogled-chromium-113.0.5672.92-1.1 on GA media
These are all security issues fixed in the ungoogled-chromium-113.0.5672.92-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:12948-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
chromiumAlpine:v3.14 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
chromiumAlpine:v3.15 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
chromiumAlpine:v3.16 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
chromiumAlpine:v3.17 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
chromiumAlpine:v3.18 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
chromiumAlpine:v3.19 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
chromiumAlpine:v3.20 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
chromiumAlpine:v3.21 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
chromiumAlpine:v3.22 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
chromiumAlpine:v3.23 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
Show 24 moreShow less
| Package | Affected | Fixed |
|---|---|---|
chromiumAlpine:v3.24 |
before 89.0.4389.90-r0 | 89.0.4389.90-r0 |
qt5-qtwebengineAlpine:v3.14 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
qt5-qtwebengineAlpine:v3.15 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
qt5-qtwebengineAlpine:v3.16 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
qt5-qtwebengineAlpine:v3.17 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
qt5-qtwebengineAlpine:v3.18 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
qt5-qtwebengineAlpine:v3.19 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
qt5-qtwebengineAlpine:v3.20 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
qt5-qtwebengineAlpine:v3.21 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
qt5-qtwebengineAlpine:v3.22 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
qt5-qtwebengineAlpine:v3.23 |
before 5.15.3_git20200401-r0 | 5.15.3_git20200401-r0 |
chromiumDebian:12 |
before 89.0.4389.90-1 | 89.0.4389.90-1 |
chromiumDebian:13 |
before 89.0.4389.90-1 | 89.0.4389.90-1 |
chromiumDebian:14 |
before 89.0.4389.90-1 | 89.0.4389.90-1 |
chromiumDebian:10 From an advisory covering 41 CVEs |
before 89.0.4389.114-1~deb10u1, plus listed versions 73.0.3683.75-174.0.3729.108-175.0.3770.10-175.0.3770.80-175.0.3770.90-1 Show 45 moreShow less76.0.3809.100-176.0.3809.100-1~deb10u176.0.3809.62-176.0.3809.71-176.0.3809.87-176.0.3809.87-278.0.3904.108-178.0.3904.108-1~deb10u178.0.3904.87-178.0.3904.97-178.0.3904.97-1~deb10u179.0.3945.130-179.0.3945.130-1~deb10u179.0.3945.130-279.0.3945.56-179.0.3945.79-180.0.3987.106-180.0.3987.116-180.0.3987.122-180.0.3987.122-280.0.3987.132-180.0.3987.132-1~deb10u180.0.3987.149-180.0.3987.149-1~deb10u180.0.3987.162-180.0.3987.162-1~deb10u181.0.4044.62-181.0.4044.92-183.0.4103.106-183.0.4103.116-183.0.4103.116-1~deb10u183.0.4103.116-1~deb10u283.0.4103.116-1~deb10u383.0.4103.116-283.0.4103.116-383.0.4103.116-3.183.0.4103.83-184.0.4147.105-184.0.4147.89-187.0.4280.141-0.187.0.4280.141-0.1~deb10u187.0.4280.88-0.187.0.4280.88-0.287.0.4280.88-0.387.0.4280.88-0.4 |
89.0.4389.114-1~deb10u1 |
chromium-browser-stableMageia:7 From an advisory covering 36 CVEs |
before 89.0.4389.90-1.mga7 | 89.0.4389.90-1.mga7 |
chromium-browser-stableMageia:8 From an advisory covering 36 CVEs |
before 89.0.4389.90-1.mga8 | 89.0.4389.90-1.mga8 |
chromium-browserUbuntu:16.04:LTS |
before 89.0.4389.82-0ubuntu0.16.04.1, plus listed versions 45.0.2454.101-0ubuntu1.120147.0.2526.73-0ubuntu1.121847.0.2526.106-0ubuntu1.122148.0.2564.82-0ubuntu1.122248.0.2564.116-0ubuntu1.1229 Show 45 moreShow less49.0.2623.87-0ubuntu1.123249.0.2623.108-0ubuntu1.123350.0.2661.102-0ubuntu0.16.04.1.123751.0.2704.79-0ubuntu0.16.04.1.124252.0.2743.116-0ubuntu0.16.04.1.125053.0.2785.143-0ubuntu0.16.04.1.125453.0.2785.143-0ubuntu0.16.04.1.125755.0.2883.87-0ubuntu0.16.04.126356.0.2924.76-0ubuntu0.16.04.126857.0.2987.98-0ubuntu0.16.04.127658.0.3029.81-0ubuntu0.16.04.127758.0.3029.96-0ubuntu0.16.04.127958.0.3029.110-0ubuntu0.16.04.128159.0.3071.109-0ubuntu0.16.04.128959.0.3071.109-0ubuntu0.16.04.129160.0.3112.78-0ubuntu0.16.04.129360.0.3112.113-0ubuntu0.16.04.129861.0.3163.79-0ubuntu0.16.04.130061.0.3163.100-0ubuntu0.16.04.130662.0.3202.62-0ubuntu0.16.04.130862.0.3202.75-0ubuntu0.16.04.131362.0.3202.89-0ubuntu0.16.04.131562.0.3202.94-0ubuntu0.16.04.131763.0.3239.84-0ubuntu0.16.04.163.0.3239.132-0ubuntu0.16.04.164.0.3282.119-0ubuntu0.16.04.164.0.3282.140-0ubuntu0.16.04.164.0.3282.167-0ubuntu0.16.04.165.0.3325.181-0ubuntu0.16.04.166.0.3359.139-0ubuntu0.16.04.366.0.3359.181-0ubuntu0.16.04.167.0.3396.99-0ubuntu0.16.04.268.0.3440.75-0ubuntu0.16.04.168.0.3440.106-0ubuntu0.16.04.169.0.3497.81-0ubuntu0.16.04.170.0.3538.67-0ubuntu0.16.04.170.0.3538.77-0ubuntu0.16.04.170.0.3538.110-0ubuntu0.16.04.171.0.3578.80-0ubuntu0.16.04.171.0.3578.98-0ubuntu0.16.04.172.0.3626.119-0ubuntu0.16.04.172.0.3626.121-0ubuntu0.16.04.173.0.3683.75-0ubuntu0.16.04.173.0.3683.86-0ubuntu0.16.04.174.0.3729.169-0ubuntu0.16.04.1 |
89.0.4389.82-0ubuntu0.16.04.1 |
chromium-browserUbuntu:18.04:LTS |
before 89.0.4389.82-0ubuntu0.18.04.1, plus listed versions 61.0.3163.100-0ubuntu1.137862.0.3202.62-0ubuntu0.17.10.138062.0.3202.89-0ubuntu1.138662.0.3202.94-0ubuntu1.138863.0.3239.84-0ubuntu1 Show 44 moreShow less63.0.3239.108-0ubuntu164.0.3282.119-0ubuntu164.0.3282.140-0ubuntu164.0.3282.167-0ubuntu165.0.3325.146-0ubuntu165.0.3325.181-0ubuntu166.0.3359.139-0ubuntu0.18.04.366.0.3359.181-0ubuntu0.18.04.167.0.3396.99-0ubuntu0.18.04.168.0.3440.75-0ubuntu0.18.04.168.0.3440.106-0ubuntu0.18.04.169.0.3497.81-0ubuntu0.18.04.170.0.3538.67-0ubuntu0.18.04.170.0.3538.77-0ubuntu0.18.04.170.0.3538.110-0ubuntu0.18.04.171.0.3578.80-0ubuntu0.18.04.171.0.3578.98-0ubuntu0.18.04.172.0.3626.119-0ubuntu0.18.04.172.0.3626.121-0ubuntu0.18.04.173.0.3683.75-0ubuntu0.18.04.173.0.3683.86-0ubuntu0.18.04.174.0.3729.169-0ubuntu0.18.04.175.0.3770.90-0ubuntu0.18.04.175.0.3770.142-0ubuntu0.18.04.176.0.3809.87-0ubuntu0.18.04.176.0.3809.100-0ubuntu0.18.04.177.0.3865.90-0ubuntu0.18.04.178.0.3904.70-0ubuntu0.18.04.278.0.3904.97-0ubuntu0.18.04.178.0.3904.108-0ubuntu0.18.04.179.0.3945.79-0ubuntu0.18.04.179.0.3945.130-0ubuntu0.18.04.180.0.3987.87-0ubuntu0.18.04.180.0.3987.149-0ubuntu0.18.04.180.0.3987.163-0ubuntu0.18.04.181.0.4044.122-0ubuntu0.18.04.181.0.4044.138-0ubuntu0.18.04.183.0.4103.61-0ubuntu0.18.04.184.0.4147.105-0ubuntu0.18.04.185.0.4183.83-0ubuntu0.18.04.285.0.4183.121-0ubuntu0.18.04.186.0.4240.75-0ubuntu0.18.04.186.0.4240.198-0ubuntu0.18.04.187.0.4280.66-0ubuntu0.18.04.1 |
89.0.4389.82-0ubuntu0.18.04.1 |
chromiumopenSUSE:Leap 15.2 From an advisory covering 3 CVEs |
before 89.0.4389.90-lp152.2.80.1 | 89.0.4389.90-lp152.2.80.1 |
chromiumSUSE:Package Hub 15 SP2 From an advisory covering 3 CVEs |
before 89.0.4389.90-bp152.2.65.1 | 89.0.4389.90-bp152.2.65.1 |
operaopenSUSE:Leap 15.2 NonFree From an advisory covering 9 CVEs |
before 75.0.3969.171-lp152.2.40.1 | 75.0.3969.171-lp152.2.40.1 |
chromiumopenSUSE:Tumbleweed From an advisory covering 1081 CVEs |
before 93.0.4577.82-1.1 | 93.0.4577.82-1.1 |
chromiumopenSUSE:Tumbleweed From an advisory covering 2310 CVEs |
before 113.0.5672.92-1.1 | 113.0.5672.92-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected, aliases, references | OSV | |
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-21191 is a high vulnerability (CVSS 8.8) in Google Chrome, published March 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.37%, the 72nd percentile. Fixed in chromium 89.0.4389.90-r0.
References
crbug.com/1167357
chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop_12.html
debian.org/security/2021/dsa-4886
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N52OWF4BAP3JNK2QYGU3Q6QUVDZDCIMQ
security.gentoo.org/glsa/202104-08
nvd.nist.gov/vuln/detail/CVE-2021-21191
Show 194 moreShow less
github.com/advisories/GHSA-jc3c-7crw-rhq4
security.alpinelinux.org/vuln/CVE-2021-21191
security-tracker.debian.org/tracker/CVE-2021-21191
advisories.mageia.org/MGASA-2021-0142.html
bugs.mageia.org/show_bug.cgi?id=28534
ubuntu.com/security/CVE-2021-21191
cve.org/CVERecord?id=CVE-2021-21191
lists.opensuse.org/archives/list/[email protected]/thread/KJEA6IOQ2CJDQ5EOOYOTAMEHN6772YOW
bugzilla.suse.com/1183515
suse.com/security/cve/CVE-2021-21191
This page doesn't list everything
Left out here: 30 versions and 2,131 references. The JSON record has them.