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CVE-2020-25229

HIGH
7.5
CVSS Score
Published: December 14, 2020 at 09:05 PM UTC
Updated: June 17, 2026 at 03:06 AM UTC
2 products affected across 1 vendorLogo !8 Bm FirmwareLogo! 8 Bm

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Severity
HIGH7.5
Exploit prediction
EPSS 0.6%

Description

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). The implemented encryption for communication with affected devices is prone to replay attacks due to the usage of a static key. An attacker could change the password or change the configuration on any affected device if using prepared messages that were generated for another device.

Affected

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

Logo !8 Bm Firmware· Siemens
95%
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)
Logo! 8 Bm· Siemens
60%
All versions < V8.3

Remediation

No guide yet

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

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-480824.pdf

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-321CWE-798

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