CVE-2026-92058
HIGHCVSS 8.8/10EPSS 0.25%
Last modified
CVE-2026-92058 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
Description
Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 153.3.0 |
| Mozilla | Firefox | >= 154.0.0, < 156.0.0 |
| Mozilla | Thunderbird | < 153.3.0 |
| Mozilla | Thunderbird | >= 154.0, < 156.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2068438Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2026-90/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-93/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-94/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-96/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-92058?
Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
How severe is CVE-2026-92058?
CVE-2026-92058 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.
How do I fix CVE-2026-92058?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-92052Privilege escalation due to uninitialized memory in the Grap…8.8
- CVE-2026-92053Privilege escalation in the Graphics: CanvasWebGL component.…8.8
- CVE-2026-92054Privilege escalation in the Memory component. This vulnerabi…8.8
- CVE-2026-92055Privilege escalation in the DevTools component. This vulnera…8.8
- CVE-2026-92056Use-after-free in the Graphics: Text component. This vulnera…8.8
- CVE-2026-92057Mitigation bypass in the Enterprise Policies component. This…9.1
- CVE-2026-92059Incorrect boundary conditions in the DOM: Editor component. …9.3
- CVE-2026-92060Use-after-free in the Internationalization component. This v…8.8
- CVE-2026-92061Incorrect boundary conditions in the Security: Process Sandb…9.8
- CVE-2026-92062Privilege escalation in the Session Restore component. This …8.8
- CVE-2026-92063Denial-of-service in the Audio/Video component. This vulnera…6.5
- CVE-2026-92064Sandbox escape due to incorrect boundary conditions in the W…8.8
Are you affected by CVE-2026-92058?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST