CVE-2020-25231 json
A vulnerability has been identified in LOGO!
published 2020-12-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17921
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 7%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- siemens logo!_soft_comfort 8.3
- siemens logo!_8_bm_firmware 8.3
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-20-343-10 updated cvss 6.2
Siemens LOGO! 8 BM
-
Siemens LOGO! 8 BM (incl.'SIPLUS variants) <V8.3affected: fixed in V8.3, mitigation support.industry.siemens.com
-
Siemens LOGO! Soft Comfort <V8.3affected: fixed in V8.3, mitigation support.industry.siemens.com
Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf
Exploit prediction
0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- Siemens LOGO! 8 BM (incl. SIPLUS variants)
- Siemens LOGO! Soft Comfort
Classification
References
-
cert-portal.siemens.com
/productcert/pdf/ssa-480824.pdf
vendor-advisory
Sources
- CVE List CVE-2020-25231
- NVD CVE-2020-25231
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