Use after free in Google Chrome
Priority MEDIUM 42CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
Use after free in WebAudio in Google Chrome prior to 91.0.4472.114 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
Why it matters now
EPSS 0.01746 77th percentileScored 2026-11-07
Fix Fixed Chrome (Google): 91.0.4472.114
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Chrome | before 91.0.4472.114 | 91.0.4472.114 | Patch available | CNA |
- Chrome VendorGoogle Affected before 91.0.4472.114 Fixed in 91.0.4472.114 Patch available CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* | before 91.0.4472.114 | Vulnerable | |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 34 | Vulnerable | Fedoraproject |
- cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* Versions before 91.0.4472.114 Vulnerable ·Google
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
Remediation
- Fix · CNA Chrome (Google) Fixed in 91.0.4472.114
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Google Chrome 91.0.4472.114
4 records Highest priority Priority CRITICAL 1 CRITICAL, 3 MEDIUM
Other records, highest priority first
- TI-2021-10949 Use after free in Google ChromePriority CRITICAL 97
- TI-2021-10952 Use after free in Google ChromePriority MEDIUM 52
- TI-2021-10950 Use after free in Google ChromePriority MEDIUM 41
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-30556
- 2026-10-03 Alias added: GHSA-r5p5-33c4-chrw
References
More Google Chrome vulnerabilities
- TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
- TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
Sources
- CVE-2021-30556 · CVE Program
- CVE-2021-30556 · NVD
- FIRST EPSS
- GHSA-r5p5-33c4-chrw · GitHub Advisory Database · CC BY 4.0
- CVE-2021-30556 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences