CVE-2023-49691Network attack vector

Root command execution via unsanitized DDNS configuration

Published Dec 12, 2023 · Updated Aug 13, 2024

OS command injection in Siemens industrial routers before 8.0 allows remote authenticated users to execute commands as root. The DDNS configuration handler passes insufficiently neutralized configuration elements into an operating-system command after a successful IP address update. Administrative privileges and a completed IP address update are required, after which injected commands can compromise the device.

CVSS severity7.2
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Siemens industrial routers before 8.0 allows remote authenticated users to execute commands as root. The DDNS configuration handler passes insufficiently neutralized configuration elements into an operating-system command after a successful IP address update. Administrative privileges and a completed IP address update are required, after which injected commands can compromise the device.

The record

CVE
CVE-2023-49691
Published
Dec 12, 2023
Updated
Aug 13, 2024
Vendor
Siemens
Product
SCALANCE MUM856-1 (RoW)
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2024Record 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 <V8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Siemens · SCALANCE MUM856-1 (RoW)version=0 <V8.0
Siemens · SCALANCE MUM856-1 (EU)version=0 <V8.0
Siemens · RUGGEDCOM RM1224 LTE(4G) NAMversion=0 <V8.0
Siemens · RUGGEDCOM RM1224 LTE(4G) EUversion=0 <V8.0
Siemens · SCALANCE M874-3version=0 <V8.0
Siemens · SCALANCE M812-1 ADSL Routerversion=0 <V8.0
Siemens · SCALANCE S615 EEC LAN Routerversion=0 <V8.0
Siemens · SCALANCE M826-2 SHDSL-Routerversion=0 <V8.0
Siemens · SCALANCE M816-1 ADSL Routerversion=0 <V8.0
Siemens · SCALANCE M876-3 (ROK)version=0 <V8.0
Siemens · SCALANCE M876-3version=0 <V8.0
Siemens · SCALANCE M804PBversion=0 <V8.0
Siemens · SCALANCE M876-4version=0 <V8.0
Siemens · SCALANCE M876-4 (NAM)version=0 <V8.0
Siemens · SCALANCE MUM853-1 (EU)version=0 <V8.0
Siemens · SCALANCE S615 LAN-Routerversion=0 <V8.0
Siemens · SCALANCE M876-4 (EU)version=0 <V8.0
Siemens · SCALANCE M874-2version=0 <V8.0

Published CVSS scores

7.2Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:H/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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

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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