Auth bypass in Siemens Logo\! 8 Bm
CVE-2020-7589
A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions). The vulnerability could lead to an attacker reading and modifying the device configuration and obtain project files from affected devices. The security vulnerability could be exploited by an unauthenticated attacker with network access to port 135/tcp. No user interaction is required to exploit this security vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the device. At the time of advisory publication no public exploitation of this security vulnerability was known.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.020 (79.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Siemens Logo\! 8 Bm
- Siemens Logo\! 8 Bm Firmware
- Siemens Logo! 8 Bm (Incl. Siplus Variants) — versions All versions
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-817401.pdf (Vendor Advisory)
- www.us-cert.gov/ics/advisories/icsa-20-161-03 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7589?
- CVE-2020-7589 is a critical-severity vulnerability in Siemens Logo\! 8 Bm, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2020-06-10.
- How severe is CVE-2020-7589?
- Critical severity. CVSS v3 base score is 9.1 out of 10.