CVE-2025-40819Network attack vector

License bypass via mutable database ticket records

Published Dec 9, 2025 · Updated Dec 9, 2025

Incorrect authorization in Siemens SINEMA Remote Connect Server before 3.2 SP4 allows remote authenticated users to bypass license limits. License validation trusts mutable values in the system_ticketinfo database table instead of independently enforcing the licensed scope. Exploitation requires database access and permits unauthorized use beyond that scope, without reported confidentiality or availability impact.

CVSS severity4.3
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Siemens SINEMA Remote Connect Server before 3.2 SP4 allows remote authenticated users to bypass license limits. License validation trusts mutable values in the system_ticketinfo database table instead of independently enforcing the licensed scope. Exploitation requires database access and permits unauthorized use beyond that scope, without reported confidentiality or availability impact.

The record

CVE
CVE-2025-40819
Published
Dec 9, 2025
Updated
Dec 9, 2025
Vendor
Siemens
Product
SINEMA Remote Connect Server
Classifications
CWE-863, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 9, 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 <V3.2 SP4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · SINEMA Remote Connect Serverversion=0 <V3.2 SP4

Published CVSS scores

4.3Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1565.001Stored Data Manipulation

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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