CVE-2026-16362: Vulnerability in Mozilla Firefox
Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
AI Analysis
Technical Summary
CVE-2026-16362 is a use-after-free vulnerability in the WebRTC Audio/Video component of Firefox. This type of vulnerability can lead to memory corruption and potentially allow an attacker to execute arbitrary code or cause a denial of service. The vulnerability was reported by a security researcher and fixed in Firefox 153 and Firefox ESR 140.13. The Mozilla advisory classifies the impact as high and includes references to the bug report (Bug 2043188). There are no confirmed exploits in the wild at this time.
Potential Impact
The use-after-free vulnerability in the WebRTC Audio/Video component can result in memory corruption, which may be leveraged to execute arbitrary code or crash the browser, leading to denial of service. The impact is rated high by the vendor. No active exploitation has been observed in the wild.
Mitigation Recommendations
Users should update to Firefox 153 or later, or Firefox ESR 140.13 or later, where this vulnerability has been fixed. Applying these official patches fully mitigates the issue. No additional mitigation steps are required beyond updating to the fixed versions.
CVE-2026-16362: Vulnerability in Mozilla Firefox
Description
Use-after-free in the WebRTC: Audio/Video component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16362 is a use-after-free vulnerability in the WebRTC Audio/Video component of Firefox. This type of vulnerability can lead to memory corruption and potentially allow an attacker to execute arbitrary code or cause a denial of service. The vulnerability was reported by a security researcher and fixed in Firefox 153 and Firefox ESR 140.13. The Mozilla advisory classifies the impact as high and includes references to the bug report (Bug 2043188). There are no confirmed exploits in the wild at this time.
Potential Impact
The use-after-free vulnerability in the WebRTC Audio/Video component can result in memory corruption, which may be leveraged to execute arbitrary code or crash the browser, leading to denial of service. The impact is rated high by the vendor. No active exploitation has been observed in the wild.
Mitigation Recommendations
Users should update to Firefox 153 or later, or Firefox ESR 140.13 or later, where this vulnerability has been fixed. Applying these official patches fully mitigates the issue. No additional mitigation steps are required beyond updating to the fixed versions.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-4wj3-8493-w74m
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-16362"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5fd1591010f89cc21c9d4c
Added to database: 07/21/2026, 20:06:49 UTC
Last enriched: 07/22/2026, 17:29:55 UTC
Last updated: 08/27/2026, 22:52:09 UTC
Views: 55
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.