CVE-2025-40942

Elevated code execution by local users

Published Jan 13, 2026 · Updated Jan 13, 2026

Local privilege escalation in Siemens TeleControl Server Basic before 3.1.2.4 allows local users to run code with elevated privileges. Siemens has not disclosed the affected component or the operation that executes with unnecessary privileges. Exploitation requires local low-privileged access and, under Siemens's CVSS v4 assessment, passive user interaction; successful exploitation compromises the host.

CVSS severity7.3
High
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege escalation in Siemens TeleControl Server Basic before 3.1.2.4 allows local users to run code with elevated privileges. Siemens has not disclosed the affected component or the operation that executes with unnecessary privileges. Exploitation requires local low-privileged access and, under Siemens's CVSS v4 assessment, passive user interaction; successful exploitation compromises the host.

The record

CVE
CVE-2025-40942
Published
Jan 13, 2026
Updated
Jan 13, 2026
Vendor
Siemens
Product
TeleControl Server Basic
Classifications
CWE-250, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2026CVE 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

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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 <V3.1.2.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · TeleControl Server Basicversion=0 <V3.1.2.4

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3Siemens AGCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
8.8Siemens AGCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-250Execution with Unnecessary Privileges
T1068Exploitation for Privilege Escalation

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

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Your stack

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