CVE-2021-30543
Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who...
Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension 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
What each source reports
NVD Score used
Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
- Record
CVE-2021-30543- 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 Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
- Record
CVE-2021-30543- Updated
- 2026-11-02
EUVDEUVD-2021-17464 No score
Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
- Record
EUVD-2021-17464- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fcgj-qg8m-28wx No score
Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who...
Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
- Record
GHSA-fcgj-qg8m-28wx- Weakness
- CWE-416
- Updated
- 2026-11-02
OSV
Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
- Record
CVE-2021-30543- 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
OSVDEBIAN-CVE-2021-30543
Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
- Record
DEBIAN-CVE-2021-30543- 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-2021-30543
Use after free in Tab Strip in Google Chrome prior to 91.0.4472.77 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page.
- Record
UBUNTU-CVE-2021-30543- 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
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
chromiumDebian:12 |
before 93.0.4577.82-1 | 93.0.4577.82-1 |
chromiumDebian:13 |
before 93.0.4577.82-1 | 93.0.4577.82-1 |
chromiumDebian:14 |
before 93.0.4577.82-1 | 93.0.4577.82-1 |
chromium-browserUbuntu:18.04:LTS |
before 91.0.4472.101-0ubuntu0.18.04.1, 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 45 moreShow less63.0.3239.108-0ubuntu164.0.3282.119-0ubuntu164.0.3282.140-0ubuntu164.0.3282.167-0ubuntu165.0.3325.146-0ubuntu165.0.3325.181-0ubuntu166.0.3359.139-0ubuntu0.18.04.366.0.3359.181-0ubuntu0.18.04.167.0.3396.99-0ubuntu0.18.04.168.0.3440.75-0ubuntu0.18.04.168.0.3440.106-0ubuntu0.18.04.169.0.3497.81-0ubuntu0.18.04.170.0.3538.67-0ubuntu0.18.04.170.0.3538.77-0ubuntu0.18.04.170.0.3538.110-0ubuntu0.18.04.171.0.3578.80-0ubuntu0.18.04.171.0.3578.98-0ubuntu0.18.04.172.0.3626.119-0ubuntu0.18.04.172.0.3626.121-0ubuntu0.18.04.173.0.3683.75-0ubuntu0.18.04.173.0.3683.86-0ubuntu0.18.04.174.0.3729.169-0ubuntu0.18.04.175.0.3770.90-0ubuntu0.18.04.175.0.3770.142-0ubuntu0.18.04.176.0.3809.87-0ubuntu0.18.04.176.0.3809.100-0ubuntu0.18.04.177.0.3865.90-0ubuntu0.18.04.178.0.3904.70-0ubuntu0.18.04.278.0.3904.97-0ubuntu0.18.04.178.0.3904.108-0ubuntu0.18.04.179.0.3945.79-0ubuntu0.18.04.179.0.3945.130-0ubuntu0.18.04.180.0.3987.87-0ubuntu0.18.04.180.0.3987.149-0ubuntu0.18.04.180.0.3987.163-0ubuntu0.18.04.181.0.4044.122-0ubuntu0.18.04.181.0.4044.138-0ubuntu0.18.04.183.0.4103.61-0ubuntu0.18.04.184.0.4147.105-0ubuntu0.18.04.185.0.4183.83-0ubuntu0.18.04.285.0.4183.121-0ubuntu0.18.04.186.0.4240.75-0ubuntu0.18.04.186.0.4240.198-0ubuntu0.18.04.187.0.4280.66-0ubuntu0.18.04.189.0.4389.82-0ubuntu0.18.04.1 |
91.0.4472.101-0ubuntu0.18.04.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| 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-2021-30543 is a high vulnerability (CVSS 8.8) in Google Chrome, published June 7, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.79%, the 56th percentile. Fixed in chromium 93.0.4577.82-1.
References
chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
crbug.com/1203607
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WKQDE3PWDKASAPSUJYMOQGL73L3YQRFS
nvd.nist.gov/vuln/detail/CVE-2021-30543
Show 7 moreShow less
github.com/advisories/GHSA-fcgj-qg8m-28wx
security-tracker.debian.org/tracker/CVE-2021-30543
ubuntu.com/security/CVE-2021-30543
cve.org/CVERecord?id=CVE-2021-30543
Left out here: 4 versions. The JSON record has them.