CVE-2024-49775Network attack vector

Unauthenticated code execution via UMC buffer overflow

Published Dec 16, 2024 · Updated Jan 13, 2026

Heap-based buffer overflow in Siemens UMC across affected industrial products allows remote attackers to execute arbitrary code. The um.abtipc.dll library mishandles crafted network data and writes beyond an allocated heap buffer. Access to UMC on TCP ports 4002 or 4004 requires no authentication, and successful exploitation grants code execution with the service's privileges.

CVSS severity9.8
Critical
EPSS probability1.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Heap-based buffer overflow in Siemens UMC across affected industrial products allows remote attackers to execute arbitrary code. The um.abtipc.dll library mishandles crafted network data and writes beyond an allocated heap buffer. Access to UMC on TCP ports 4002 or 4004 requires no authentication, and successful exploitation grants code execution with the service's privileges.

The record

CVE
CVE-2024-49775
Published
Dec 16, 2024
Updated
Jan 13, 2026
Vendor
Siemens
Product
SINEC NMS
Classifications
CWE-122, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jan 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · SINEC NMSversion=0 <*
Siemens · Opcenter RDnLversion=0 <V2410
Siemens · Totally Integrated Automation Portal (TIA Portal)version=0 <*
Siemens · Opcenter Intelligenceversion=0 <V2501.0001
Siemens · Opcenter Qualityversion=0 <V2512
Siemens · Opcenter Execution Foundationversion=0 <V2501.0001
Siemens · SIMATIC PCS neoversion=0 <*; version=0 <V4.1 Update 3; version=0 <V5.0 Update 1

Published CVSS scores

9.8Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3Siemens ProductCERTCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo