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SonicWall NetExtender Linux Auto-Upgrade Process Handles Temporary Files Insecurely, Allowing Attackers to Manipulate File Paths

Last refreshed2026-09-30

Status: NEW  |  Advisory ID: CVE-2026-66153

Key Details

CVECVE-2026-66153
CVSS Score / Version7.0 (High) / CVSS v3.1
Updated2026-08-28
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Proseattack vector is local; attack complexity is high; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Classified asCWE-59 (Improper Link Resolution Before File Access ('Link Following'))

What to Know

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

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-66153
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-66153