💣Exploit CVE-2025-2817 - Mozilla Firefox System File Privilege Escalation

[Mental_Outlaw]

CVE ID : CVE-2025-2817
Published : April 29, 2025, 2:15 p.m. | 1 day, 5 hours ago
Description : Mozilla Firefox'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 affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird ESR < 128.10.
Severity: 8.8 | HIGH
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