CVE-2026-40851 Command injection via USB
A local attacker can execute arbitrary code via a crafted USB file, compromising industrial controllers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-40851?
CVE-2026-40851 is a high-severity command injection vulnerability in Helmholz REX100, published on 27 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A local attacker can perform a confusion attack on the cfgparser via a specially crafted file on an USB stick leading to code execution. This can result in a total loss of confidentiality, integrity and availability.
Weakness: CWE-1287
Which versions are affected by CVE-2026-40851?
How do I fix CVE-2026-40851?
No fix has been published for CVE-2026-40851 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-2026-40851 being exploited?
There is no known exploitation of CVE-2026-40851 in the wild and no public exploit code.
Sources
Also known as GHSA-hcr2-wfhw-2h9m.