CVE-2020-25230

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-14 · updated 2026-06-17
Weakness: CWE-327

Description

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). Due to the usage of an outdated cipher mode on port 10005/tcp, an attacker could extract the encryption key from a captured communication with the device.

Affected products

Siemens LOGO! 8 BM (incl. SIPLUS variants): before 8.3 — fixed in 8.3

How to fix

Upgrade to a fixed version: Siemens LOGO! 8 BM (incl. SIPLUS variants) 8.3. Check the vendor advisory for mitigations.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-480824.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-480824.pdf

Get alerted when CVE-2020-25230 or the next vulnerability affects your stack