CVE-2025-40796: simatic pcs neo Out-of-bounds Read

Description

A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SIMATIC PCS neo V6.0 (All versions), User Management Component (UMC) (All versions < V2.15.1.3). Affected products contain a out-of-bounds read vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to cause a denial of service condition.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
siemens	simatic_pcs_neo	All
siemens	simatic_pcs_neo	All
siemens	user_management_component	< 2.15.1.3

References

Advisories & Patches

https://cert-portal.siemens.com/productcert/html/ssa-722410.html

Frequently Asked Questions

What is CVE-2025-40796? +

A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SIMATIC PCS neo V6.0 (All versions), User Management Component (UMC) (All versions < V2.15.1.3). Affected products contain a out-of-bounds read vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to cause a denial of service condition. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-40796? +

CVE-2025-40796 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-40796? +

CVE-2025-40796 affects products from siemens, specifically: simatic_pcs_neo, user_management_component. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-40796? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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