CVE-2026-92079: Vulnerability in Mozilla Firefox
Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
AI Analysis
Technical Summary
CVE-2026-92079 is a mitigation bypass vulnerability affecting the Widget: Win32 component in Mozilla Firefox. The flaw was resolved in Firefox 156 and Firefox ESR 153.3. The vendor advisory confirms the fix and classifies the impact as high. There are no reports of active exploitation. The vulnerability is part of a broader set of security fixes released in Firefox 156.
Potential Impact
The vulnerability allows bypassing of mitigation controls in the Widget: Win32 component, which could potentially lead to increased risk of exploitation. The vendor rates the impact as high, indicating serious security implications if unpatched. However, no active exploitation has been observed.
Mitigation Recommendations
Users should upgrade to Firefox 156 or Firefox ESR 153.3 or later, where this vulnerability has been fixed. The vendor advisory confirms the availability of an official fix. No additional mitigation steps are required beyond applying the update.
CVE-2026-92079: Vulnerability in Mozilla Firefox
Description
Mitigation bypass in the Widget: Win32 component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-92079 is a mitigation bypass vulnerability affecting the Widget: Win32 component in Mozilla Firefox. The flaw was resolved in Firefox 156 and Firefox ESR 153.3. The vendor advisory confirms the fix and classifies the impact as high. There are no reports of active exploitation. The vulnerability is part of a broader set of security fixes released in Firefox 156.
Potential Impact
The vulnerability allows bypassing of mitigation controls in the Widget: Win32 component, which could potentially lead to increased risk of exploitation. The vendor rates the impact as high, indicating serious security implications if unpatched. However, no active exploitation has been observed.
Mitigation Recommendations
Users should upgrade to Firefox 156 or Firefox ESR 153.3 or later, where this vulnerability has been fixed. The vendor advisory confirms the availability of an official fix. No additional mitigation steps are required beyond applying the update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-15T12:34:40.765Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/","vendor":"Mozilla"}]
Threat ID: 6aa941d955bf5e2cf5d76a42
Added to database: 09/15/2026, 13:02:17 UTC
Last enriched: 09/15/2026, 13:16:38 UTC
Last updated: 09/16/2026, 03:18:27 UTC
Views: 12
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