CVE-2023-44317Network attack vector

Administrative code execution via malformed X.509 upload

Published Nov 14, 2023 · Updated Jan 14, 2025

Improper certificate validation in Siemens network devices allows remote authenticated users with administrative access to execute arbitrary code. The certificate-upload path accepts extraneous untrusted content embedded in an X.509 certificate as trusted data before device-side processing. Administrative privileges and network access to the management interface are required; successful exploitation grants full code execution on the appliance.

CVSS severity7.2
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Siemens network devices allows remote authenticated users with administrative access to execute arbitrary code. The certificate-upload path accepts extraneous untrusted content embedded in an X.509 certificate as trusted data before device-side processing. Administrative privileges and network access to the management interface are required; successful exploitation grants full code execution on the appliance.

The record

CVE
CVE-2023-44317
Published
Nov 14, 2023
Updated
Jan 14, 2025
Vendor
Siemens
Product
SCALANCE WUM763-1 (US)
Classifications
CWE-349
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 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 <V3.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Siemens · SCALANCE WUM763-1 (US)version=0 <V3.0.0
Siemens · SCALANCE WAM766-1 EEC (ME)version=0 <V3.0.0
Siemens · SCALANCE WUB762-1version=0 <V3.0.0
Siemens · SCALANCE MUM856-1 (RoW)version=0 <V7.2.2
Siemens · SCALANCE WUB762-1 iFeaturesversion=0 <V3.0.0
Siemens · SCALANCE MUM856-1 (EU)version=0 <V7.2.2
Siemens · SCALANCE WAM766-1 (US)version=0 <V3.0.0
Siemens · RUGGEDCOM RM1224 LTE(4G) NAMversion=0 <V7.2.2
Siemens · RUGGEDCOM RM1224 LTE(4G) EUversion=0 <V7.2.2
Siemens · SCALANCE WUM766-1version=0 <V3.0.0
Siemens · SCALANCE M874-3version=0 <V7.2.2
Siemens · SCALANCE WAM763-1version=0 <V3.0.0
Siemens · SCALANCE WAM766-1version=0 <V3.0.0
Siemens · SCALANCE M812-1 ADSL Routerversion=0 <V7.2.2
Siemens · SCALANCE S615 EEC LAN Routerversion=0 <V7.2.2
Siemens · SCALANCE WUM766-1 (ME)version=0 <V3.0.0
Siemens · SCALANCE M826-2 SHDSL-Routerversion=0 <V7.2.2
Siemens · SCALANCE M816-1 ADSL Routerversion=0 <V7.2.2
Siemens · SCALANCE M876-3 (ROK)version=0 <V7.2.2
Siemens · SCALANCE M876-3version=0 <V7.2.2
Siemens · SCALANCE WAM766-1 EECversion=0 <V3.0.0
Siemens · SCALANCE M804PBversion=0 <V7.2.2
Siemens · SCALANCE WAM766-1 EEC (US)version=0 <V3.0.0
Siemens · SCALANCE WAB762-1version=0 <V3.0.0
Siemens · SCALANCE M876-4version=0 <V7.2.2
Siemens · SCALANCE WAM766-1 (ME)version=0 <V3.0.0
Siemens · SCALANCE M876-4 (NAM)version=0 <V7.2.2
Siemens · SCALANCE MUM853-1 (EU)version=0 <V7.2.2
Siemens · SCALANCE WAM763-1 (US)version=0 <V3.0.0
Siemens · SCALANCE WUM766-1 (USA)version=0 <V3.0.0
Siemens · SCALANCE S615 LAN-Routerversion=0 <V7.2.2
Siemens · SCALANCE WUM763-1version=0 <V3.0.0
Siemens · SCALANCE M876-4 (EU)version=0 <V7.2.2
Siemens · SCALANCE WAM763-1 (ME)version=0 <V3.0.0
Siemens · SCALANCE M874-2version=0 <V7.2.2

Published CVSS scores

7.2Siemens AGCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.6Siemens AGCVSS:4.0/AV:N/AC:L/AT:N/PR:H/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 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-349Acceptance of Extraneous Untrusted Data With Trusted Data

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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