CVE-2025-40771

CRITICAL

SIMATIC CP 1542SP-1, CP 1543SP-1 < V2.4.24 - Unauthenticated Configuration Data Access

Title source: llm

Description

A vulnerability has been identified in SIMATIC CP 1542SP-1 (6GK7542-6UX00-0XE0) (All versions < V2.4.24), SIMATIC CP 1542SP-1 IRC (6GK7542-6VX00-0XE0) (All versions < V2.4.24), SIMATIC CP 1543SP-1 (6GK7543-6WX00-0XE0) (All versions < V2.4.24), SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL (6AG2542-6VX00-4XE0) (All versions < V2.4.24), SIPLUS ET 200SP CP 1543SP-1 ISEC (6AG1543-6WX00-7XE0) (All versions < V2.4.24), SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL (6AG2543-6WX00-4XE0) (All versions < V2.4.24). Affected devices do not properly authenticate configuration connections. This could allow an unauthenticated remote attacker to access the configuration data.

References (1)

Core 1

Core References

Vendor Advisory

https://cert-portal.siemens.com/productcert/html/ssa-486936.html

Scores

CVSS v3 9.8

EPSS 0.0013

EPSS Percentile 31.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-306

Status published

Products (6)

Siemens/SIMATIC CP 1542SP-1 < V2.4.24

Siemens/SIMATIC CP 1542SP-1 IRC < V2.4.24

Siemens/SIMATIC CP 1543SP-1 < V2.4.24

Siemens/SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL < V2.4.24

Siemens/SIPLUS ET 200SP CP 1543SP-1 ISEC < V2.4.24

Siemens/SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL < V2.4.24

Published Oct 14, 2025

Tracked Since Feb 18, 2026