CVE-2025-40576 Null dereference in SCALANCE LPE9403

What is CVE-2025-40576?

CVE-2025-40576 is a medium-severity vulnerability in Siemens SCALANCE LPE9403, published on 13 May 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-476

Which versions are affected by CVE-2025-40576?

It affects 1 product.

Products include Siemens Scalance Lpe9403 Firmware.

How do I fix CVE-2025-40576?

No fix has been published for CVE-2025-40576 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-40576 being exploited?

There is no known exploitation of CVE-2025-40576 in the wild and no public exploit code.

Other vulnerabilities in Siemens SCALANCE LPE9403

• CVE-2023-27407 Command injection in SCALANCE LPE9403 Critical 9.9
• CVE-2025-27396 Privilege escalation in SCALANCE LPE9403 High 8.7
• CVE-2025-27392 Command injection in SCALANCE LPE9403 High 8.6
• CVE-2025-27393 Command injection in SCALANCE LPE9403 High 8.6
• CVE-2025-27394 Command injection in SCALANCE LPE9403 High 8.6

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8m8v-2g6r-8jwq.