Link following in NetExtender for Linux - CVE-2026-66153
Published: August 26, 2026
Vulnerability identifier: #VU145835
CSH Severity: Low
CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-66153
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to manipulate file paths.
The vulnerability exists due to improper link resolution before file access in the NEService auto-upgrade process when handling temporary files. A local user can manipulate temporary file paths to manipulate file paths.
Affected software
NetExtender for Linux
How to mitigate CVE-2026-66153
Install security update from vendor's website.
NetExtender for Linux - update to 10.3.6-39