CVE-2026-62654 Code injection in Reyrolle 7SR5
An attacker with physical access can trigger maintenance mode to execute arbitrary unsigned code from a network server on Siemens Reyrolle relays.
- 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-2026-62654?
CVE-2026-62654 is a high-severity code injection vulnerability in Siemens Reyrolle 7SR5, published on 8 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70). A special maintenance mode can be activated via a physical key sequence during device boot, in which the device downloads and executes program code from a network server without verifying its authenticity or integrity. This could allow an attacker with physical access to the device to upload and execute arbitrary, unsigned code.
Weakness: CWE-494
Which versions are affected by CVE-2026-62654?
How do I fix CVE-2026-62654?
No fix has been published for CVE-2026-62654 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-62654 being exploited?
There is no known exploitation of CVE-2026-62654 in the wild and no public exploit code.
Sources
Also known as GHSA-gq4w-8jx8-2hcg.