CVE-2026-92042: Vulnerability in Mozilla Firefox
Race condition in the DOM: Content Processes component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
AI Analysis
Technical Summary
This vulnerability involves a race condition in the DOM: Content Processes component of Mozilla Firefox. Race conditions occur when multiple threads or processes access shared data concurrently, leading to unpredictable behavior. Mozilla fixed this vulnerability in Firefox 156 and Firefox ESR 153.3, as documented in their security advisory MFSA2026-90. No active exploitation in the wild has been reported for this issue.
Potential Impact
The vulnerability has a high impact rating according to the Mozilla advisory, indicating it could allow attackers to cause significant security issues such as privilege escalation or sandbox escape if exploited. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Users and administrators should update Firefox to version 156 or later, or Firefox ESR 153.3 or later, to mitigate this vulnerability. Since an official fix is available, applying the update is the recommended remediation. No additional mitigation steps are specified by Mozilla.
CVE-2026-92042: Vulnerability in Mozilla Firefox
Description
Race condition in the DOM: Content Processes 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
This vulnerability involves a race condition in the DOM: Content Processes component of Mozilla Firefox. Race conditions occur when multiple threads or processes access shared data concurrently, leading to unpredictable behavior. Mozilla fixed this vulnerability in Firefox 156 and Firefox ESR 153.3, as documented in their security advisory MFSA2026-90. No active exploitation in the wild has been reported for this issue.
Potential Impact
The vulnerability has a high impact rating according to the Mozilla advisory, indicating it could allow attackers to cause significant security issues such as privilege escalation or sandbox escape if exploited. However, no known exploits in the wild have been reported.
Mitigation Recommendations
Users and administrators should update Firefox to version 156 or later, or Firefox ESR 153.3 or later, to mitigate this vulnerability. Since an official fix is available, applying the update is the recommended remediation. No additional mitigation steps are specified by Mozilla.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-15T12:34:02.764Z
- 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: 6aa93e6355bf5e2cf5d30ffa
Added to database: 09/15/2026, 12:47:31 UTC
Last enriched: 09/15/2026, 13:17:26 UTC
Last updated: 09/16/2026, 04:01:24 UTC
Views: 10
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