CVE-2020-25234

Name: CVE-2020-25234
Creator: NVD / NIST
Published: 2020-12-14T21:15:20.13+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.7/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2020-25234 is a high-severity vulnerability rated 7.7/10 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 0.30% 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 LOGO! program files generated and used by the affected components offer the possibility to save user-defined functions (UDF) in a password protected way. This protection is implemented in the software that displays the information. An attacker could reverse engineer the UDFs directly from stored program files.

Metrics

CVSS 3.1

7.7/10

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

EPSS Probability

0.30%

21.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-321

Affected Software

Vendor	Product	Versions
Siemens	Logo\! 8 Bm Firmware	< 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-2020-25234?

How severe is CVE-2020-25234?

CVE-2020-25234 has a CVSS score of 7.7/10 (HIGH severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25234?

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-2020-25234?

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

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Source: NVD / NIST