CVE-2020-25234

HIGH
7.7
CVSS Score
Published: December 14, 2020 at 09:05 PM UTC
Updated: June 17, 2026 at 03:06 AM UTC
3 products affected across 1 vendorLogo !8 Bm FirmwareLogo! 8 BmLOGO! Soft Comfort

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Severity
HIGH7.7
Exploit prediction
EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 8.3
Affected range stops below 8.3, so it looks safe — our inference, not a vendor statement
siemens-logo-8-bm (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-321

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