CVE-2025-54851 Denial of service in DIRIS Digiware M-70
An unauthenticated attacker can cause a denial of service on Socomec DIRIS Digiware M-70 devices by sending a specific Modbus TCP message.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-54851?
CVE-2025-54851 is a high-severity denial of service vulnerability in Socomec DIRIS Digiware M-70, published on 1 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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 single Modbus TCP message to port 503 using the Write Single Register function code (6) to write the value 1 to register 4352. This action changes the Modbus address to 15. After this message is sent, the device will be in a denial-of-service state.
Weakness: CWE-306
Which versions are affected by CVE-2025-54851?
It affects 1 product.
Products include Socomec Diris M-70 Firmware.
How do I fix CVE-2025-54851?
No fix has been published for CVE-2025-54851 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-54851 being exploited?
There is no known exploitation of CVE-2025-54851 in the wild and no public exploit code.
Other vulnerabilities in Socomec DIRIS Digiware M-70
Sources
Also known as GHSA-f949-3w42-ghhf.