CVE-2026-109737: 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, as documented in their security advisories. No CVSS score is provided, and no active exploitation has been reported.
Potential Impact
The vulnerability could allow an attacker to bypass mitigation mechanisms related to Enterprise Policies in Firefox, potentially undermining security controls configured via these policies. However, no active exploitation is known, and the issue is fixed in recent versions.
Mitigation Recommendations
Users and administrators should update to Firefox 158 or later, or Firefox ESR 153.5 or later, to ensure the vulnerability is remediated. No additional mitigation is required once updated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:29:43.626Z
- 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: 6ace2c482cdf04f65661d53d
Added to database: 10/13/2026, 13:04:08 UTC
Last enriched: 10/13/2026, 13:49:05 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 2
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