Chromium: CVE-2021-30612 Use after free in WebRTC
Priority MEDIUM 43CWE-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
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
Chromium: CVE-2021-30612 Use after free in WebRTC
Why it matters now
EPSS 0.02768 86th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) | all versions | — | No fix listed | CNA |
- Microsoft Edge (Chromium-based) VendorMicrosoft Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 35 | Vulnerable | Fedoraproject |
| cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:* | up to 93.0.961.38 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:* | up to 93.0.4577.63 | Vulnerable | Microsoft |
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
- cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:* Versions up to 93.0.961.38 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:* Versions up to 93.0.4577.63 Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-30612
- 2026-10-03 Alias added: GHSA-mcwj-mj5h-p34c
References
More Microsoft Edge vulnerabilities
- TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2022-03781 Out-of-bounds write in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2015-00277 Use-after-free vulnerability in Adobe Flash Player before 13.0.0.269 and 14.x through… KEVCVSS 3.1CRITICAL 9.8
- TI-2015-00275 Unspecified vulnerability in Adobe Flash Player through 13.0.0.262 and 14.x, 15.x, and… KEVCVSS 3.1CRITICAL 9.8
- TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2020-12621 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2021-30612 · CVE Program
- CVE-2021-30612 · NVD
- FIRST EPSS
- GHSA-mcwj-mj5h-p34c · GitHub Advisory Database · CC BY 4.0
- CVE-2021-30612 · 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