CVE-2020-25232

mediumpriority · track · 30OT risk · elevatedEPSS 0.008 · 57 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.82% (57th) EPSS

CVSS 5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-28

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). Due to the usage of an insecure random number generation function and a deprecated cryptographic function, an attacker could extract the key that is used when communicating with an affected device on port 8080/tcp.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedLOGO! 8 BM (incl.'SIPLUS variants)cisa_csaf_ot
Update to V8.3. Notice that in order to update, a new hardware version if required.
https://support.industry.siemens.com/cs/ww/en/view/109783346/
MitigationLOGO! 8 BM (incl.'SIPLUS variants)cisa_csaf_ot
Apply Defense-in-Depth concept, including protection concept outlined in the system manual.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:Csecondary · CISA US

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-327USCWE-327US

affected products (4)

Products and version ranges known to be affected.

Siemens LOGO! 8 BM (incl.'SIPLUS variants): All versions < V8.3all versionscisa_csaf_otUS
Siemens LOGO! 8 BM (incl.'SIPLUS variants)< V8.3cisa_csaf_otUS
Siemens LOGO! 8 BM (incl. SIPLUS variants)All versions → V8.3enisa_euvdEU
siemens logo! 8 bm firmware< 8.3nvdUScpe:2.3:o:siemens:logo\!_8_bm_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-20-343-10Siemens LOGO! 8 BM2020-12-08icsa · cisa_csaf_otUS
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2020-12-14modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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