Critical severity · published Oct 14, 2025
CVE-2025-40771
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),…
9.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SC
SIMATIC CP 1542SP-1 · Siemens
before V2.4.24 · source: vendor
SC
SIMATIC CP 1542SP-1 IRC · Siemens
before V2.4.24 · source: vendor
SC
SIMATIC CP 1543SP-1 · Siemens
before V2.4.24 · source: vendor
SE
SIPLUS ET 200SP CP 1542SP-1 IRC TX RAIL · Siemens
before V2.4.24 · source: vendor
SE
SIPLUS ET 200SP CP 1543SP-1 ISEC · Siemens
before V2.4.24 · source: vendor
SE
SIPLUS ET 200SP CP 1543SP-1 ISEC TX RAIL · Siemens
before V2.4.24 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-40771
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-40771
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-486936.html
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