CVE-2020-25231

Name: CVE-2020-25231
Creator: NVD / NIST
Published: 2020-12-14T21:15:19.927+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.17%

Last modified Jun 17, 2026

CVE-2020-25231 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3), LOGO! Soft Comfort (All versions < V8.3). EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3), LOGO! Soft Comfort (All versions < V8.3). The encryption of program data for the affected devices uses a static key. An attacker could use this key to extract confidential information from protected program files.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.17%

6.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Siemens	Logo\! 8 Bm Firmware	< 8.3
Siemens	Logo\! Soft Comfort	< 8.3

References

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

Timeline

Published: Dec 14, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25231?

How severe is CVE-2020-25231?

CVE-2020-25231 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25231?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-25231?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST