Use-after-free in the Audio/Video: Web Codecs component. (CVE-2026-92005)
A use-after-free vulnerability was identified in the Audio/Video: Web Codecs component of Firefox. This security flaw was addressed and fixed in Firefox 156 and Firefox ESR 140.16 and 153.3. The vulnerability is rated with high impact by the vendor. No active exploitation in the wild has been reported.
AI Analysis
Technical Summary
CVE-2026-92005 describes a use-after-free vulnerability in the Audio/Video: Web Codecs component of Firefox. This type of vulnerability involves the program attempting to use memory after it has been freed, which can lead to crashes or potentially arbitrary code execution. Mozilla fixed this issue in Firefox 156 and Firefox ESR 140.16 and 153.3. The vendor advisory classifies the impact as high and provides references to the associated bug report. No CVSS score is provided.
Potential Impact
The vulnerability has a high impact rating according to Mozilla. Use-after-free bugs can lead to memory corruption, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges if exploited. However, no known exploits in the wild have been reported at this time.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 156, Firefox ESR 140.16, and Firefox ESR 153.3. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. No additional mitigation actions are required beyond applying the official patches.
Use-after-free in the Audio/Video: Web Codecs component. (CVE-2026-92005)
Description
A use-after-free vulnerability was identified in the Audio/Video: Web Codecs component of Firefox. This security flaw was addressed and fixed in Firefox 156 and Firefox ESR 140.16 and 153.3. The vulnerability is rated with high impact by the vendor. No active exploitation in the wild has been reported.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-92005 describes a use-after-free vulnerability in the Audio/Video: Web Codecs component of Firefox. This type of vulnerability involves the program attempting to use memory after it has been freed, which can lead to crashes or potentially arbitrary code execution. Mozilla fixed this issue in Firefox 156 and Firefox ESR 140.16 and 153.3. The vendor advisory classifies the impact as high and provides references to the associated bug report. No CVSS score is provided.
Potential Impact
The vulnerability has a high impact rating according to Mozilla. Use-after-free bugs can lead to memory corruption, crashes, or potentially allow an attacker to execute arbitrary code or escalate privileges if exploited. However, no known exploits in the wild have been reported at this time.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 156, Firefox ESR 140.16, and Firefox ESR 153.3. Users and administrators should update affected Firefox installations to these versions or later to remediate the issue. No additional mitigation actions are required beyond applying the official patches.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-c7h2-74jc-fjxf
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-92005"]
- State
- PUBLISHED
Threat ID: 6aaa081455bf5e2cf5ea5450
Added to database: 09/16/2026, 03:08:04 UTC
Last enriched: 09/16/2026, 03:17:44 UTC
Last updated: 09/16/2026, 04:01:24 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.