How severe is CVE-2025-2817?

This vulnerability has a severity rating of HIGH with a CVSS score of 8.8 out of 10.

What type of vulnerability is CVE-2025-2817?

This is classified as CWE-22, which is a common weakness in software security.

CVE-2025-2817 - HIGH Severity | CVSS 8.8

Vulnerability 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 affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.

Related Vulnerabilities

CVE-2009-0244

HIGH

CVSS:8.8(High)

Directory traversal vulnerability in the OBEX FTP Service in the Microsoft Bluetooth stack in Windows Mobile 6 Professional, and probably Windows Mobile 5.0 for Pocket PC and 5.0 for Pocket PC Phone E...

CWE-222009

CVE-2010-0012

HIGH

CVSS:8.8(High)

Directory traversal vulnerability in libtransmission/metainfo.c in Transmission 1.22, 1.34, 1.75, and 1.76 allows remote attackers to overwrite arbitrary files via a .. (dot dot) in a pathname within ...

CWE-222010

CVE-2013-4855

HIGH

CVSS:8.8(High)

D-Link DIR-865L has SMB Symlink Traversal due to misconfiguration in the SMB service allowing symbolic links to be created to locations outside of the Samba share.

CWE-222013

CVE-2013-7466

HIGH

CVSS:8.8(High)

Simple Machines Forum (SMF) 2.0.4 allows local file inclusion, with resultant remote code execution, in install.php via ../ directory traversal in the db_type parameter if install.php remains present ...

CWE-222013

CVE-2014-5301

HIGH

CVSS:8.8(High)

Directory traversal vulnerability in ServiceDesk Plus MSP v5 to v9.0 v9030; AssetExplorer v4 to v6.1; SupportCenter v5 to v7.9; IT360 v8 to v10.4.

CWE-222014

CVE-2014-5302

HIGH

CVSS:8.8(High)

Directory traversal vulnerability in ServiceDesk Plus and Plus MSP v5 through v9.0 v9030; AssetExplorer v4 to v6.1; SupportCenter v5 to v7.9; IT360 v8 to v10.4 allows remote authenticated users to exe...

CWE-222014