CVE-2025-40576

low-risk

Published 2025-05-13

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V4.0 HF0). Affected devices do not properly validate incoming Profinet packets. An unauthenticated remote attacker can exploit this flaw by sending a specially crafted malicious packet, which leads to a crash of the dcpd process.

Do I need to act?

0.16% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 4.3/10 Medium

ADJACENT_NETWORK / LOW complexity

Affected Products (1)

Scalance Lpe9403 Firmware

Affected Vendors

Siemens

References (1)

Vendor Advisory https://cert-portal.siemens.com/productcert/html/ssa-327438.html

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low-risk

Severity 15/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal