Auth bypass in Socomec Diris Digiware M-70
CVE-2025-54849
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 502 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.
Vulnerability class: Broken Authentication
EPSS: 0.003 (20.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Socomec Diris Digiware M-70 — versions 1.6.9
- Socomec Diris_digiware_m-70
- Socomec Diris_digiware_m-70_firmware — versions 1.6.9
Weakness classification (CWE)
References
- talos-cna@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-54849?
- CVE-2025-54849 is a high-severity vulnerability in Socomec Diris Digiware M-70, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2025-12-01.
- How severe is CVE-2025-54849?
- High severity. CVSS v3 base score is 7.5 out of 10.