CVE-2025-30174Network attack vector

Service crash via oversized integer buffer read

Published May 13, 2025 · Updated Jul 8, 2025

Out-of-bounds read in Siemens UMC before 2.15.1.1 and integrated products allows remote attackers to crash the UMC service. The um.Ris.exe process uses an attacker-supplied oversized integer during buffer handling, causing an out-of-bounds read and process termination. No authentication or user interaction is required; network access to TCP ports 4002 or 4004 is sufficient, and the bounded impact is interruption of UMC-backed services.

CVSS severity8.7
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Siemens UMC before 2.15.1.1 and integrated products allows remote attackers to crash the UMC service. The um.Ris.exe process uses an attacker-supplied oversized integer during buffer handling, causing an out-of-bounds read and process termination. No authentication or user interaction is required; network access to TCP ports 4002 or 4004 is sufficient, and the bounded impact is interruption of UMC-backed services.

The record

CVE
CVE-2025-30174
Published
May 13, 2025
Updated
Jul 8, 2025
Vendor
Siemens
Product
SINEC NMS
Classifications
CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · SINEC NMSversion=0 <V4.0
Siemens · User Management Component (UMC)version=0 <V2.15.1.1
Siemens · TIA Portalversion=0 <*
Siemens · SINEMA Remote Connect Serverversion=0 <*
Siemens · SIMATIC PCS neoversion=0 <*

Published CVSS scores

8.7Siemens AGCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5Siemens AGCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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