CVE-2024-39866Network attack vector

Administrator creation via unsafe encrypted backup import

Published Jul 9, 2024 · Updated Aug 27, 2025

Privilege escalation in Siemens SINEMA Remote Connect Server before 3.2 SP1 allows remote authenticated users to create administrators. The backup-import path restores user records from an encrypted backup without preventing an imported account from receiving administrative privileges. Exploitation requires the backup encryption key and permission to upload backup files, after which the imported account gains administrative control.

CVSS severity8.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Siemens SINEMA Remote Connect Server before 3.2 SP1 allows remote authenticated users to create administrators. The backup-import path restores user records from an encrypted backup without preventing an imported account from receiving administrative privileges. Exploitation requires the backup encryption key and permission to upload backup files, after which the imported account gains administrative control.

The record

CVE
CVE-2024-39866
Published
Jul 9, 2024
Updated
Aug 27, 2025
Vendor
Siemens
Product
SINEMA Remote Connect Server
Classifications
CWE-267, T1136
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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 SP1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · SINEMA Remote Connect Serverversion=0 <V3.2 SP1

Published CVSS scores

8.7Siemens AGCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8Siemens AGCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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.

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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-267Privilege Defined With Unsafe Actions
T1136Create Account

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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