CVE-2025-54850: A denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP functionality of Socomec DIRIS…
CVE-2025-54850 · Severity: high · CVSS 7.5 · Published 2025-12-01
A denial of service vulnerability exists in the Modbus TCP and Modbus RTU over TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted series of network requests can lead to a denial of service. An attacker can send a sequence of unauthenticated packets to trigger this vulnerability.An attacker can trigger this denial-of-service condition by sending a sequence of Modbus RTU over TCP messages to port 503 using the Write Single Register function code (6). The attack sequence begins with a message to register 58112 with a value of 1000, indicating that a configuration change will follow. Next, a message is sent to register 29440 with a value corresponding to the new Modbus address to be configured. Finally, a message to register 57856 with a value of 161 commits the configuration change.
After this configuration change, the device will be in a denial-of-service state.
No. Junglewise Threat Intelligence has no report of CVE-2025-54850 being exploited in the wild.
How severe is CVE-2025-54850?
High severity, with a CVSS score of 7.5, published 1 December 2025.
Which products and versions are affected?
Socomec Diris M-70, Socomec Diris M-70 Firmware. The advisory does not name versions.
Is there a fix for CVE-2025-54850?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-54850?
Check whether you run Socomec Diris M-70 or Socomec Diris M-70 Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.