What is CVE-2025-40578?

CVE-2025-40578 is a medium-severity vulnerability in Siemens Scalance Lpe9403, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2025-05-13.

How severe is CVE-2025-40578?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Out-of-bounds Read in Siemens Scalance Lpe9403

CVE-2025-40578

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions). Affected devices do not properly handle multiple incoming Profinet packets received in rapid succession. An unauthenticated remote attacker can e…

Vulnerability class: Buffer Overflow

EPSS: 0.002 (40.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Siemens Scalance Lpe9403 — versions 0

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cert-portal.siemens.com/productcert/html/ssa-327438.html

Frequently asked questions

What is CVE-2025-40578?: CVE-2025-40578 is a medium-severity vulnerability in Siemens Scalance Lpe9403, classified under Out-of-bounds Read. CVSS score: 4.3/10. Published 2025-05-13.
How severe is CVE-2025-40578?: Medium severity. CVSS v3 base score is 4.3 out of 10.