CVE-2026-66147 Command injection in GMS
Unauthenticated attackers can execute arbitrary commands on SonicWall GMS servers via crafted requests, leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-66147?
CVE-2026-66147 is a critical command injection vulnerability in SonicWall GMS, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated command injection vulnerability was identified in the GMS Dispatcher Service in GMS 9.5.1 and earlier versions which allows remote attacker to perform remote code execution through specially crafted requests.
Weakness: CWE-94
Which versions are affected by CVE-2026-66147?
How do I fix CVE-2026-66147?
No fix has been published for CVE-2026-66147 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-66147 being exploited?
There is no known exploitation of CVE-2026-66147 in the wild and no public exploit code.
Sources
Also known as GHSA-2x4r-qjw8-2rm8.