CVE-2026-109710: Vulnerability in Mozilla Firefox
Description
Use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
CVSS v3.1
Score 5.4medium
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.
Weaknesses
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. Such a flaw could potentially lead to memory corruption issues. Mozilla has released fixes for this vulnerability in Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5.
Potential Impact
The vulnerability could allow an attacker to cause memory corruption, which might lead to application crashes or potentially arbitrary code execution. However, there are no reports of active exploitation in the wild.
Mitigation Recommendations
Users and administrators should update Firefox to version 158 or later, or to Firefox ESR versions 115.43 or 153.5 or later, where this vulnerability has been fixed. Applying these official updates fully mitigates the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-10-13T00:29:19.051Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-107/","vendor":"Mozilla"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","vendor":"Mozilla"}]
Threat ID: 6ace2c402cdf04f65661caf7
Added to database: 10/13/2026, 13:04:00 UTC
Last enriched: 10/13/2026, 14:19:30 UTC
Last updated: 10/13/2026, 18:57:33 UTC
Views: 2
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