CVE-2026-109764: Vulnerability in Mozilla Firefox
Description
Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
pkg:github/mozilla/firefox-esrRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a bypass of mitigation controls within the Enterprise Policies component of Mozilla Firefox. The flaw was resolved by Mozilla in Firefox 158 and Firefox ESR 153.5, indicating that versions prior to these are affected. No further technical details or CVSS score are provided.
Potential Impact
The vulnerability could allow bypassing of mitigation mechanisms in the Enterprise Policies component, potentially undermining policy enforcement. However, no active exploitation has been reported, and the fix is available in the specified versions.
Mitigation Recommendations
Users and administrators should update Firefox to version 158 or later, or Firefox ESR to version 153.5 or later, to remediate this vulnerability. Applying these official fixes fully addresses the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:48:35.246Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","vendor":"Mozilla"}]
Threat ID: 6ace2c4f2cdf04f65661d567
Added to database: 10/13/2026, 13:04:15 UTC
Last enriched: 10/13/2026, 13:34:12 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 9
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