CVEvulnerability
CVE-2025-2817
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2025-04-29
- Last modified
- 2026-10-05
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-22
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.
Affected configurations
• mozilla firefox (< 115.23.0)
• mozilla firefox (< 138.0)
• mozilla firefox (>= 116.0 < 128.10.0)
• mozilla thunderbird (< 128.10.0)
• mozilla thunderbird (>= 129.0 < 138.0)
Related
Weakness · CWE (1)
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1917536 Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2025-28/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-29/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-30/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-31/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-32/ Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html lists.debian.org