CVE-2026-92056: Vulnerability in Mozilla Firefox
Use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the Graphics: Text component of Mozilla Firefox. Use-after-free vulnerabilities occur when a program continues to use memory after it has been freed, potentially leading to memory corruption or arbitrary code execution. Mozilla fixed this issue in Firefox 156 and Firefox ESR 153.3 as part of their security updates announced on September 15, 2026.
Potential Impact
The vulnerability is classified with high impact by Mozilla, indicating it could allow an attacker to cause memory corruption or potentially execute arbitrary code. However, there are no known active exploits in the wild targeting this specific flaw at the time of the advisory.
Mitigation Recommendations
Users and administrators should update Mozilla Firefox to version 156 or later, or Firefox ESR 153.3 or later, to remediate this vulnerability. The vendor has released an official fix, and applying this update fully mitigates the issue.
CVE-2026-92056: Vulnerability in Mozilla Firefox
Description
Use-after-free in the Graphics: Text 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 use-after-free condition in the Graphics: Text component of Mozilla Firefox. Use-after-free vulnerabilities occur when a program continues to use memory after it has been freed, potentially leading to memory corruption or arbitrary code execution. Mozilla fixed this issue in Firefox 156 and Firefox ESR 153.3 as part of their security updates announced on September 15, 2026.
Potential Impact
The vulnerability is classified with high impact by Mozilla, indicating it could allow an attacker to cause memory corruption or potentially execute arbitrary code. However, there are no known active exploits in the wild targeting this specific flaw at the time of the advisory.
Mitigation Recommendations
Users and administrators should update Mozilla Firefox to version 156 or later, or Firefox ESR 153.3 or later, to remediate this vulnerability. The vendor has released an official fix, and applying this update fully mitigates the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-09-15T12:34:17.201Z
- 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: 6aa93e6755bf5e2cf5d31010
Added to database: 09/15/2026, 12:47:35 UTC
Last enriched: 09/15/2026, 13:02:45 UTC
Last updated: 09/16/2026, 04:01:24 UTC
Views: 9
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