Unauthenticated service crash via integer overflow
Published May 13, 2025 · Updated Jul 8, 2025
An out-of-bounds write in Siemens UMC and its integrations allows remote attackers to crash affected services via a crafted integer. The ixstream::ReadString routine in um.serlib.dll accepts an attacker-controlled 32-bit length whose overflow drives a write beyond the destination buffer. Reachability requires network access to a UMC service on TCP port 4002 or 4004; exploitation interrupts the service without disclosed data access or code execution.
Summary
What happened
An out-of-bounds write in Siemens UMC and its integrations allows remote attackers to crash affected services via a crafted integer. The ixstream::ReadString routine in um.serlib.dll accepts an attacker-controlled 32-bit length whose overflow drives a write beyond the destination buffer. Reachability requires network access to a UMC service on TCP port 4002 or 4004; exploitation interrupts the service without disclosed data access or code execution.
The record
- CVE
- CVE-2025-30175
- Published
- May 13, 2025
- Updated
- Jul 8, 2025
- Vendor
- Siemens
- Product
- SINEC NMS
- Classifications
- CWE-787, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 13, 2025CVE publishedPublication date reported by the CVE source.
- 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?
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- Affected versionversion=0 <V4.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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