CVE-2026-66153

HIGH CVSS 3.1: 7.0 EPSS 0.19%
Updated Aug 28, 2026
Sonicwall
Parameter Value
CVSS 7.0 (HIGH)
Type CWE-59 (Improper Link Resolution)
Vendor Sonicwall
Public PoC No

The NEService auto-upgrade process insecurely handles temporary files in SonicWall NetExtender Linux client which allows an attacker to manipulate file paths.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
High
Difficult to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1