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Vulnerability · Published Sep 9, 2025 · Assigned by siemens

CVE-2025-40798

High 7.5

In plain English

A high-severity out-of-bounds read in SIMATIC PCS neo V4.1 from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 54.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 < V6.0 SP1 Update 1), 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.

Affected products (as reported)

VendorProductVersions
Siemens SIMATIC PCS neo V4.1 0 – before *
Siemens SIMATIC PCS neo V5.0 0 – before *
Siemens SIMATIC PCS neo V6.0 0 – before V6.0 SP1 Update 1
Siemens User Management Component (UMC) 0 – before V2.15.1.3

Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References