CVE-2026-40852 Command injection via malicious configuration
Authenticated attackers can inject commands into configuration generators, leading to remote code execution on industrial controllers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-40852?
CVE-2026-40852 is a high-severity command injection vulnerability in Helmholz REX100, published on 27 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A highly authenticated attacker can alter the config generator injecting a payload into future created configurations. The device is not correctly checking this configuration value before passing it to an system execute leading to code execution. This can result in a total loss of confidentiality, integrity and availability.
Weakness: CWE-78
Which versions are affected by CVE-2026-40852?
How do I fix CVE-2026-40852?
No fix has been published for CVE-2026-40852 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-2026-40852 being exploited?
There is no known exploitation of CVE-2026-40852 in the wild and no public exploit code.
Sources
Also known as GHSA-4334-w3q6-m8g5.