CVE-2026-66151 Memory corruption in Global VPN Client
A local attacker can cause a system crash via an out-of-bounds kernel memory read in the SonicWall Global VPN Client driver.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-66151?
CVE-2026-66151 is a medium-severity memory corruption vulnerability in SonicWall Global VPN Client, published on 7 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-125
Which versions are affected by CVE-2026-66151?
How do I fix CVE-2026-66151?
No fix has been published for CVE-2026-66151 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-66151 being exploited?
There is no known exploitation of CVE-2026-66151 in the wild and no public exploit code.
Sources
Also known as GHSA-q437-rgxw-hhjh.