SB2026082682 - Multiple vulnerabilities in SonicWall NetExtender for Linux

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026082682

SB2026082682 - Multiple vulnerabilities in SonicWall NetExtender for Linux

Published: August 26, 2026

Security Bulletin ID SB2026082682
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Path traversal (CVE-ID: CVE-2026-66152)

CWE-ID: CWE-29 - Path Traversal: \'\\..\\filename\'

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to write arbitrary files as root.

The vulnerability exists due to path traversal in OPSWAT tarball when processing a crafted update archive. A remote attacker can supply a specially crafted tarball to write arbitrary files as root.

User interaction is required.


2) Link following (CVE-ID: CVE-2026-66153)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: 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]


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.


Remediation

Install update from vendor's website.

References