CVE-2026-92050: Vulnerability in Mozilla Firefox
Sandbox escape due to race condition in the XPConnect component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
AI Analysis
Technical Summary
CVE-2026-92050 describes a sandbox escape vulnerability due to a race condition in the XPConnect component of Mozilla Firefox. The flaw allows an attacker to bypass sandbox restrictions, which could lead to elevated privileges or unauthorized actions outside the sandbox. Mozilla fixed this vulnerability in Firefox 156 as part of a broader security update addressing multiple high-impact issues.
Potential Impact
The vulnerability enables sandbox escape, which can undermine the security model of Firefox by allowing code execution or actions outside the sandbox. This could lead to privilege escalation or compromise of user data and system integrity. The impact is rated as moderate by Mozilla.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox version 156. Users and administrators should update to Firefox 156 or later to remediate this issue. No additional mitigation steps are required beyond applying the official update.
CVE-2026-92050: Vulnerability in Mozilla Firefox
Description
Sandbox escape due to race condition in the XPConnect component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.
Affected software
Mozilla
Firefox
Mozilla
Thunderbird
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-92050 describes a sandbox escape vulnerability due to a race condition in the XPConnect component of Mozilla Firefox. The flaw allows an attacker to bypass sandbox restrictions, which could lead to elevated privileges or unauthorized actions outside the sandbox. Mozilla fixed this vulnerability in Firefox 156 as part of a broader security update addressing multiple high-impact issues.
Potential Impact
The vulnerability enables sandbox escape, which can undermine the security model of Firefox by allowing code execution or actions outside the sandbox. This could lead to privilege escalation or compromise of user data and system integrity. The impact is rated as moderate by Mozilla.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox version 156. Users and administrators should update to Firefox 156 or later to remediate this issue. No additional mitigation steps are required beyond applying the official update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-15T12:34:10.939Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","vendor":"Mozilla"}]
Threat ID: 6aa93e6555bf5e2cf5d31007
Added to database: 09/15/2026, 12:47:33 UTC
Last enriched: 09/15/2026, 13:03:13 UTC
Last updated: 09/16/2026, 03:18:28 UTC
Views: 8
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