PT-2026-91957 · Mozilla+1 · Firefox Esr+2
CVSS v3.1
10
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Firefox ESR versions prior to 140.16
Thunderbird versions prior to 140.16
Description
A use-after-free issue exists within the Just-In-Time (JIT) component of the JavaScript Engine. A use-after-free is a memory corruption flaw that occurs when an application continues to use a pointer after it has been freed, which can lead to crashes or arbitrary code execution.
Recommendations
Update Firefox ESR to version 140.16.
Update Thunderbird to version 140.16.
Fix
Use After Free
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Firefox Esr
Rocky Linux
Thunderbird