CVE-2023-6866
HIGHCVSS 8.8/10EPSS 0.68%
Last modified
CVE-2023-6866 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. TypedArrays can be fallible and lacked proper exception handling. This could lead to abuse in other APIs which expect TypedArrays to always succeed. EPSS estimates a 0.68% chance of exploitation in the next 30 days.
Description
TypedArrays can be fallible and lacked proper exception handling. This could lead to abuse in other APIs which expect TypedArrays to always succeed. This vulnerability affects Firefox < 121.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 121.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1849037Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/202401-10Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-56/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1849037Issue Tracking, Permissions Required
- https://security.gentoo.org/glsa/202401-10Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-56/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-6866?
TypedArrays can be fallible and lacked proper exception handling. This could lead to abuse in other APIs which expect TypedArrays to always succeed. This vulnerability affects Firefox < 121.
How severe is CVE-2023-6866?
CVE-2023-6866 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.68% probability of exploitation in the next 30 days.
How do I fix CVE-2023-6866?
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.
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Are you affected by CVE-2023-6866?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST