Siemens SIMATIC PCS neo 4.1/5.0 User Management out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.64

Summaryinfo

A vulnerability categorized as problematic has been discovered in Siemens SIMATIC PCS neo 4.1/5.0. This issue affects some unknown processing of the component User Management Component. The manipulation results in out-of-bounds. This vulnerability is cataloged as CVE-2025-40798. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Siemens SIMATIC PCS neo 4.1/5.0. Affected is an unknown functionality of the component User Management Component. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at cert-portal.siemens.com. This vulnerability is traded as CVE-2025-40798 since 04/16/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/09/2026).

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (siemens): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/16/2025 CVE reserved
09/09/2025 +146 days Advisory disclosed
09/09/2025 +0 days VulDB entry created
06/09/2026 +273 days VulDB entry last update

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-722410
Status: Confirmed

CVE: CVE-2025-40798 (🔒)
GCVE (CVE): GCVE-0-2025-40798
GCVE (VulDB): GCVE-100-323184

Entryinfo

Created: 09/09/2025 12:12
Updated: 06/09/2026 13:09
Changes: 09/09/2025 12:12 (77), 06/09/2026 13:09 (1)
Complete: 🔍
Cache ID: 216::103

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