Auth bypass in Siemens Logo! 12/24rce
CVE-2025-40817
A vulnerability has been identified in LOGO! 12/24RCE (6ED1052-1MD08-0BA2) (All versions), LOGO! 12/24RCEo (6ED1052-2MD08-0BA2) (All versions), LOGO! 230RCE (6ED1052-1FB08-0BA2) (All versions), LOGO! 230RCEo (6ED1052-2FB08-0BA2) (All versions), LOGO! 24CE (6ED1052-1CC08-0BA2) (All versions), LOGO! 24CEo (6ED1052-2CC08-0BA2) (All versions), LOGO! 24RCE (6ED1052-1HB08-0BA2) (All versions), LOGO! 24RCEo (6ED1052-2HB08-0BA2) (All versions), SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA2) (All versions), SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA2) (All versions), SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA2) (All versions), SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA2) (All versions), SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA2) (All versions), SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA2) (All versions), SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA2) (All versions), SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA2) (All versions). Affected devices do not conduct certain validations when interacting with them. This could allow an unauthenticated remote attacker to change time of the device, which means the device could behave differently.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (11.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Siemens Logo! 12/24rce — versions 0
- Siemens Logo! 12/24rceo — versions 0
- Siemens Logo! 230rce — versions 0
- Siemens Logo! 230rceo — versions 0
- Siemens Logo! 24ce — versions 0
- Siemens Logo! 24ceo — versions 0
- Siemens Logo! 24rce — versions 0
- Siemens Logo! 24rceo — versions 0
- Siemens Siplus Logo! 12/24rce — versions 0
- Siemens Siplus Logo! 12/24rceo — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-40817?
- CVE-2025-40817 is a medium-severity vulnerability in Siemens Logo! 12/24rce, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2025-11-11.
- How severe is CVE-2025-40817?
- Medium severity. CVSS v3 base score is 6.5 out of 10.