CVE-2026-16362: Vulnerability in Mozilla Firefox
CVE-2026-16362 is a high-severity use-after-free vulnerability in the WebRTC Audio/Video component of Mozilla Firefox. This flaw allows potential memory corruption leading to high impact on confidentiality, integrity, and availability. The vulnerability affects Firefox versions prior to 153 and Firefox ESR versions prior to 140.13. Mozilla has released official fixes in Firefox 153 and Firefox ESR 140.13. There are no known exploits in the wild at the time of the advisory. The vulnerability is part of a broader set of security issues addressed in these releases.
AI Analysis
Technical Summary
CVE-2026-16362 is a use-after-free vulnerability classified under CWE-416 affecting the WebRTC Audio/Video component in Mozilla Firefox. This vulnerability could lead to memory corruption with high impact on confidentiality, integrity, and availability. It was fixed in Firefox 153 and Firefox ESR 140.13. The Mozilla Foundation released security advisories MFSA 2026-68 and MFSA 2026-70 detailing this and other related vulnerabilities. No active exploitation has been observed in the wild. The fix addresses the memory safety issue by correcting the use-after-free condition in the affected component.
Potential Impact
Successful exploitation of this use-after-free vulnerability could allow an attacker to execute arbitrary code, cause a denial of service, or compromise user data confidentiality and integrity within the WebRTC Audio/Video component. The CVSS v3.1 base score is 8.8, indicating a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 153 and Firefox ESR 140.13. Users and administrators should update affected Firefox and Thunderbird installations to these versions or later to remediate the issue. No additional mitigation actions are required beyond applying these updates as per the vendor advisory.
CVE-2026-16362: Vulnerability in Mozilla Firefox
Description
CVE-2026-16362 is a high-severity use-after-free vulnerability in the WebRTC Audio/Video component of Mozilla Firefox. This flaw allows potential memory corruption leading to high impact on confidentiality, integrity, and availability. The vulnerability affects Firefox versions prior to 153 and Firefox ESR versions prior to 140.13. Mozilla has released official fixes in Firefox 153 and Firefox ESR 140.13. There are no known exploits in the wild at the time of the advisory. The vulnerability is part of a broader set of security issues addressed in these releases.
CVSS v3.1
Score 8.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16362 is a use-after-free vulnerability classified under CWE-416 affecting the WebRTC Audio/Video component in Mozilla Firefox. This vulnerability could lead to memory corruption with high impact on confidentiality, integrity, and availability. It was fixed in Firefox 153 and Firefox ESR 140.13. The Mozilla Foundation released security advisories MFSA 2026-68 and MFSA 2026-70 detailing this and other related vulnerabilities. No active exploitation has been observed in the wild. The fix addresses the memory safety issue by correcting the use-after-free condition in the affected component.
Potential Impact
Successful exploitation of this use-after-free vulnerability could allow an attacker to execute arbitrary code, cause a denial of service, or compromise user data confidentiality and integrity within the WebRTC Audio/Video component. The CVSS v3.1 base score is 8.8, indicating a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Mozilla has released official fixes for this vulnerability in Firefox 153 and Firefox ESR 140.13. Users and administrators should update affected Firefox and Thunderbird installations to these versions or later to remediate the issue. No additional mitigation actions are required beyond applying these updates as per the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-07-20T21:56:10.605Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-68/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-70/","vendor":"Mozilla"}]
Threat ID: 6a5f6cbb2a4a8d5989262508
Added to database: 07/21/2026, 12:57:31 UTC
Last enriched: 07/30/2026, 10:54:48 UTC
Last updated: 09/02/2026, 10:52:07 UTC
Views: 92
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