#VU109468 Out-of-bounds read in SCALANCE LPE9403 - CVE-2025-40577

Vulnerability identifier: #VU109468

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-40577

CWE-ID: CWE-125

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
SCALANCE LPE9403
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Siemens

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition. A remote attacker on the local network can send specially crafted Profinet packets, trigger an out-of-bounds read error and cause a denial of service condition on the system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

SCALANCE LPE9403: All versions

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External links
https://cert-portal.siemens.com/productcert/txt/ssa-327438.txt

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.