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.

INFO

Published Date :

2025-04-29T13:13:33.783Z

Last Modified :

2026-04-13T14:27:13.873Z

Source :

mozilla
AFFECTED PRODUCTS

The following products are affected by CVE-2025-2817 vulnerability.

Vendors Products
Mozilla
  • Firefox
  • Thunderbird
Redhat
  • Enterprise Linux
  • Rhel Aus
  • Rhel E4s
  • Rhel Els
  • Rhel Eus
  • Rhel Tus
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-2817.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1917536 cve-icon cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/05/msg00022.html cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-2817 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-2817 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-28/ cve-icon cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-29/ cve-icon cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-30/ cve-icon cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-31/ cve-icon cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-32/ cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact