CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 8.8. It affects Firefox.
CVE
CVE-2025-2817
Severity
HIGH
CVSS
8.8
EPSS
0.61%
Firefox
Original NVD Description
Thunderbird's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. This vulnerability was fixed in Firefox 138, Firefox ESR 128.10, Firefox ESR 115.23, Thunderbird 138, and Thunderbird 128.10.
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