CVE-2026-77120 Command injection in PowerLogic T300
Authenticated users with SSH access can execute arbitrary OS commands to gain root privileges on Schneider Electric PowerLogic T300 devices.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77120?
CVE-2026-77120 is a high-severity command injection vulnerability in Schneider Electric PowerLogic T300, published on 9 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability exists that could cause privilege escalation to root and unauthorized execution of administrative functions when an authenticated user with SSH enabled interacts with the operating system console that improperly processes user-controlled input.
Weakness: CWE-78
Which versions are affected by CVE-2026-77120?
How do I fix CVE-2026-77120?
No fix has been published for CVE-2026-77120 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-2026-77120 being exploited?
There is no known exploitation of CVE-2026-77120 in the wild and no public exploit code.
Sources
Also known as GHSA-49xv-xvfv-pf95.