VPN and endpoint clients
CVE-2026-66153: The NEService auto-upgrade process insecurely handles temporary files in SonicWall NetExtender Linux client…
The NEService auto-upgrade process insecurely handles temporary files in SonicWall NetExtender Linux client which allows an attacker to manipulate file paths.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 3.1 7
EPSS0.24%Chance of exploitation in 30 days
Public exploitNot tracked
FixSee advisory
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| NetExtender (Linux) 10.3 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
The NEService auto-upgrade process insecurely handles temporary files in SonicWall NetExtender Linux client which allows an attacker to manipulate file paths.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.