CVE-2025-40568

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-06-10 · updated 2026-06-17
Weakness: CWE-863

Description

A vulnerability has been identified in RUGGEDCOM RST2428P (6GK6242-6PA00) (All versions < V3.2), SCALANCE XCH328 (6GK5328-4TS01-2EC2) (All versions < V3.2), SCALANCE XCM324 (6GK5324-8TS01-2AC2) (All versions < V3.2), SCALANCE XCM328 (6GK5328-4TS01-2AC2) (All versions < V3.2), SCALANCE XCM332 (6GK5332-0GA01-2AC2) (All versions < V3.2), SCALANCE XRH334 (24 V DC, 8xFO, CC) (6GK5334-2TS01-2ER3) (All versions < V3.2), SCALANCE XRM334 (230 V AC, 12xFO) (6GK5334-3TS01-3AR3) (All versions < V3.2), SCALANCE XRM334 (230 V AC, 8xFO) (6GK5334-2TS01-3AR3) (All versions < V3.2), SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-3AR3) (All versions < V3.2), SCALANCE XRM334 (24 V DC, 12xFO) (6GK5334-3TS01-2AR3) (All versions < V3.2), SCALANCE XRM334 (24 V DC, 8xFO) (6GK5334-2TS01-2AR3) (All versions < V3.2), SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-2AR3) (All versions < V3.2), SCALANCE XRM334 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3) (All versions < V3.2), SCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3) (All versions < V3.2), SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-4AR3) (All versions < V3.2). An internal session termination functionality in the web interface of affected products contains an incorrect authorization check vulnerability. This could allow an authenticated remote attacker with "guest" role to terminate legitimate users' sessions.

Affected products

Siemens RUGGEDCOM RST2428P: before V3.2 — fixed in V3.2
Siemens SCALANCE XCH328: before V3.2 — fixed in V3.2
Siemens SCALANCE XCM324: before V3.2 — fixed in V3.2
Siemens SCALANCE XCM328: before V3.2 — fixed in V3.2
Siemens SCALANCE XCM332: before V3.2 — fixed in V3.2
Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC): before V3.2 — fixed in V3.2
Siemens SCALANCE XRM334 (230 V AC, 12xFO): before V3.2 — fixed in V3.2
Siemens SCALANCE XRM334 (230 V AC, 8xFO): before V3.2 — fixed in V3.2
Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+): before V3.2 — fixed in V3.2
Siemens SCALANCE XRM334 (24 V DC, 12xFO): before V3.2 — fixed in V3.2
Siemens SCALANCE XRM334 (24 V DC, 8xFO): before V3.2 — fixed in V3.2
Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+): before V3.2 — fixed in V3.2
Siemens SCALANCE XRM334 (2x230 V AC, 12xFO): before V3.2 — fixed in V3.2
Siemens SCALANCE XRM334 (2x230 V AC, 8xFO): before V3.2 — fixed in V3.2
Siemens SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+): before V3.2 — fixed in V3.2

How to fix

Upgrade to a fixed version: Siemens RUGGEDCOM RST2428P V3.2; Siemens SCALANCE XCH328 V3.2; Siemens SCALANCE XCM324 V3.2; Siemens SCALANCE XCM328 V3.2; Siemens SCALANCE XCM332 V3.2; Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC) V3.2; Siemens SCALANCE XRM334 (230 V AC, 12xFO) V3.2; Siemens SCALANCE XRM334 (230 V AC, 8xFO) V3.2; Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) V3.2; Siemens SCALANCE XRM334 (24 V DC, 12xFO) V3.2; Siemens SCALANCE XRM334 (24 V DC, 8xFO) V3.2; Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) V3.2. Check the vendor advisory for mitigations.

References

https://cert-portal.siemens.com/productcert/html/ssa-693776.html

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