CVE-2025-40798: CWE-125: Out-of-bounds Read in Siemens SIMATIC PCS neo V4.1
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.
AI Analysis
Technical Summary
CVE-2025-40798 is an out-of-bounds read vulnerability affecting Siemens SIMATIC PCS neo versions 4.1 (all versions), 5.0 (all versions), and 6.0 (all versions before SP1 Update 1), as well as the User Management Component (UMC) versions prior to 2.15.1.3. The flaw resides in the integrated UMC component and can be triggered remotely without authentication, resulting in a denial of service condition. The vulnerability is classified under CWE-125. No known exploits are reported in the wild, and no patch or remediation details are currently available.
Potential Impact
An unauthenticated remote attacker can exploit this out-of-bounds read vulnerability to cause a denial of service, potentially disrupting availability of the affected Siemens SIMATIC PCS neo systems. There is no indication of confidentiality or integrity impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the Siemens vendor advisory for current remediation guidance. Until an official fix is available, monitor Siemens communications for updates and consider limiting network exposure of affected components to reduce risk.
CVE-2025-40798: CWE-125: Out-of-bounds Read in Siemens SIMATIC PCS neo V4.1
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.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-40798 is an out-of-bounds read vulnerability affecting Siemens SIMATIC PCS neo versions 4.1 (all versions), 5.0 (all versions), and 6.0 (all versions before SP1 Update 1), as well as the User Management Component (UMC) versions prior to 2.15.1.3. The flaw resides in the integrated UMC component and can be triggered remotely without authentication, resulting in a denial of service condition. The vulnerability is classified under CWE-125. No known exploits are reported in the wild, and no patch or remediation details are currently available.
Potential Impact
An unauthenticated remote attacker can exploit this out-of-bounds read vulnerability to cause a denial of service, potentially disrupting availability of the affected Siemens SIMATIC PCS neo systems. There is no indication of confidentiality or integrity impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the Siemens vendor advisory for current remediation guidance. Until an official fix is available, monitor Siemens communications for updates and consider limiting network exposure of affected components to reduce risk.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- siemens
- Date Reserved
- 2025-04-16T08:50:26.973Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 68bfec1952647a71632fbda8
Added to database: 09/09/2025, 08:58:01 UTC
Last enriched: 06/10/2026, 10:14:46 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 198
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