CVE-2020-25229

HIGH

Siemens LOGO! 8 BM Firmware <8.3 - Replay Attack via Static Encryption Key

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0015
EPSS Percentile 35.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-321 CWE-798
Status published
Products (1)
siemens/logo\!_8_bm_firmware < 8.3
Published Dec 14, 2020
Tracked Since Feb 18, 2026