CVE-2026-66153

SonicWall NetExtender: Improper link resolution before file access ('link following')

CVE-2026-66153 has no fix on record yet for 1 affected product. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.0

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0024

14th percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
No fix yet
SonicWall NetExtender (Windows apps)	No fix yet	no-fix	n/a

Details

Published
August 25, 2026
Weakness
CWE-59: Improper link resolution before file access ('link following')
Vendor advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-66153

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