Auth bypass in Siemens Logo\! 8 Bm
CVE-2020-25228
A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). A service available on port 10005/tcp of the affected devices could allow complete access to all services without authorization. An attacker could gain full control over an affected device, if he has access to this service. The system manual recommends to protect access to this port.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.016 · change: +0.003
Affected products
- Siemens Logo\! 8 Bm
- Siemens Logo\! 8 Bm Firmware
- Siemens Logo! 8 Bm (Incl. Siplus Variants) — versions All versions < V8.3
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-480824.pdf (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-25228?
- CVE-2020-25228 is a critical-severity vulnerability in Siemens Logo\! 8 Bm, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2020-12-14.
- How severe is CVE-2020-25228?
- Critical severity. CVSS v3 base score is 9.8 out of 10.