VPN and endpoint clients
CVE-2026-66151: SonicWall Global VPN Client version 4.10.8.1108 and earlier is vulnerable to an out-of-bounds kernel memory…
SonicWall Global VPN Client version 4.10.8.1108 and earlier is vulnerable to an out-of-bounds kernel memory read in the SWIPsec.sys driver, which could allow a local attacker to cause a system crash.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityMEDIUMCVSS 3.1 5.5
EPSS0.16%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 |
|---|---|
| Global VPN Client (Windows) 4.10 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
SonicWall Global VPN Client version 4.10.8.1108 and earlier is vulnerable to an out-of-bounds kernel memory read in the SWIPsec.sys driver, which could allow a local attacker to cause a system crash.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.