PT-2025-20870 · Siemens · Scalance Lpe9403

Published 2025-05-13 · Updated 2025-05-30 · CVE-2025-40575

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions SCALANCE LPE9403 versions all versions

Description A vulnerability has been identified in SCALANCE LPE9403 devices, where they 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.

Recommendations As a temporary workaround, consider restricting access to the Profinet packets until a patch is available. Avoid using the vulnerable dcpd process in the affected SCALANCE LPE9403 devices until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

LPE

Weakness Enumeration

CWE-457

Related Identifiers

BDU:2025-06087

CVE-2025-40575

Affected Products

Scalance Lpe9403

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2025-40575 · Security Note
• https://cert-portal.siemens.com/productcert/html/ssa-327438.html · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-06087 · Security Note
• https://t.me/cvenotify/124194 · Telegram Post
• https://t.me/cvetracker/23721 · Telegram Post
• https://twitter.com/CVEnew/status/1922228925624733920 · Twitter Post