MediumCVE-2025-23384

Siemens RUGGEDCOM RM1224 LTE(4G) EU: Partial String Comparison (CVE-2025-23384)

Published 11.03.2025Sources: CVE.org, Siemens ProductCERT, EUVD

What is affected, what to do

A vulnerability has been identified in RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) (All versions < V8.2.1), RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) (All versions < V8.2.1), SCALANCE M804PB (6GK5804-0AP00-2AA2) (All versions < V8.2.1), SCALANCE M812-1 ADSL-Router family (All versions < V8.2.1), SCALANCE M816-1 ADSL-Router family (All versions < V8.2.1), SCALANCE M826-2 SHDSL-Router (6GK5826-2AB00-2AB2) (All versions < V8.2.1), SCALANCE M874-2 (6GK5874-2AA00-2AA2) (All versions < V8.2.1), SCALANCE M874-3 (6GK5874-3AA00-2AA2) (All versions < V8.2.1), SCALANCE M874-3 3G-Router (CN) (6GK5874-3AA00-2FA2) (All versions < V8.2.1), SCALANCE M876-3 (6GK5876-3AA02-2BA2) (All versions < V8.2.1), SCALANCE M876-3 (ROK) (6GK5876-3AA02-2EA2) (All versions < V8.2.1), SCALANCE M876-4 (6GK5876-4AA10-2BA2) (All versions < V8.2.1), SCALANCE M876-4 (EU) (6GK5876-4AA00-2BA2) (All versions < V8.2.1), SCALANCE M876-4 (NAM) (6GK5876-4AA00-2DA2) (All versions < V8.2.1), SCALANCE MUB852-1 (A1) (6GK5852-1EA10-1AA1) (All versions < V8.2.1), SCALANCE MUB852-1 (B1) (6GK5852-1EA10-1BA1) (All versions < V8.2.1), SCALANCE MUM853-1 (A1) (6GK5853-2EA10-2AA1) (All versions < V8.2.1), SCALANCE MUM853-1 (B1) (6GK5853-2EA10-2BA1) (All versions < V8.2.1), SCALANCE MUM853-1 (EU) (6GK5853-2EA00-2DA1) (All versions < V8.2.1), SCALANCE MUM856-1 (A1) (6GK5856-2EA10-3AA1) (All versions < V8.2.1), SCALANCE MUM856-1 (B1) (6GK5856-2EA10-3BA1) (All versions < V8.2.1), SCALANCE MUM856-1 (CN) (6GK5856-2EA00-3FA1) (All versions < V8.2.1), SCALANCE MUM856-1 (EU) (6GK5856-2EA00-3DA1) (All versions < V8.2.1), SCALANCE MUM856-1 (RoW) (6GK5856-2EA00-3AA1) (All versions < V8.2.1), SCALANCE S615 EEC LAN-Router (6GK5615-0AA01-2AA2) (All versions < V8.2.1), SCALANCE S615 LAN-Router (6GK5615-0AA00-2AA2) (All versions < V8.2.1), SCALANCE SC622-2C (6GK5622-2GS00-2AC2) (All versions < V3.2), SCALANCE SC626-2C (6GK5626-2GS00-2AC2) (All versions < V3.2), SCALANCE SC632-2C (6GK5632-2GS00-2AC2) (All versions < V3.2), SCALANCE SC636-2C (6GK5636-2GS00-2AC2) (All versions < V3.2), SCALANCE SC642-2C (6GK5642-2GS00-2AC2) (All versions < V3.2), SCALANCE SC646-2C (6GK5646-2GS00-2AC2) (All versions < V3.2). Affected devices improperly validate usernames during OpenVPN authentication.

The available sources name no fixed version. Check the vendor guidance in the references below.

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Metrics

6.3

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: NVD, CVSS v4

3.7

CVSS v3

Severity Low on the scale from 0 to 10.

Source: CVE.org, Siemens ProductCERT, EUVD

0.3 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 20.2

Show all metrics

Severity: Medium
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 42.90 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: no public PoC known
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 6.3 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 3.7
CVSS v4 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 6.3
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 0.3 %; Low — model estimates < 1% exploitation likelihood.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 20.2; Elevated — this CVE ranks above at least 10% of all CVEs scored today.
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 11.03.2025
CISA assessment (SSVC): Exploitation: none known · not automatable · Technical impact: partial; Source: CISA Vulnrichment, as of 11 March 2025
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-187

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

Source: NVD (NIST), cvelistv5, siemens_advisory, CVE.org (MITRE), ENISA EUVD

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
Siemens	RUGGEDCOM RM1224 LTE(4G) EU	`—`	—
Siemens	RUGGEDCOM RM1224 LTE(4G) NAM	`—`	—
Siemens	SCALANCE M804PB	`—`	—
Siemens	SCALANCE M812-1 ADSL-Router family	`—`	—
Siemens	SCALANCE M816-1 ADSL-Router family	`—`	—
Siemens	SCALANCE M826-2 SHDSL-Router	`—`	—
Siemens	SCALANCE M874-2	`—`	—
Siemens	SCALANCE M874-3	`—`	—
Siemens	SCALANCE M874-3 3G-Router (CN)	`—`	—
Siemens	SCALANCE M876-3	`—`	—
Siemens	SCALANCE M876-3 (ROK)	`—`	—
Siemens	SCALANCE M876-4	`—`	—
Siemens	SCALANCE M876-4 (EU)	`—`	—
Siemens	SCALANCE M876-4 (NAM)	`—`	—
Siemens	SCALANCE MUB852-1 (A1)	`—`	—
Siemens	SCALANCE MUB852-1 (B1)	`—`	—
Siemens	SCALANCE MUM853-1 (A1)	`—`	—
Siemens	SCALANCE MUM853-1 (B1)	`—`	—
Siemens	SCALANCE MUM853-1 (EU)	`—`	—
Siemens	SCALANCE MUM856-1 (A1)	`—`	—
Siemens	SCALANCE MUM856-1 (B1)	`—`	—
Siemens	SCALANCE MUM856-1 (CN)	`—`	—
Siemens	SCALANCE MUM856-1 (EU)	`—`	—
Siemens	SCALANCE MUM856-1 (RoW)	`—`	—
Siemens	SCALANCE S615 EEC LAN-Router	`—`	—
Siemens	SCALANCE S615 LAN-Router	`—`	—
Siemens	SCALANCE SC622-2C	`—`	—
Siemens	SCALANCE SC626-2C	`—`	—
Siemens	SCALANCE SC632-2C	`—`	—
Siemens	SCALANCE SC636-2C	`—`	—
Siemens	SCALANCE SC642-2C	`—`	—
Siemens	SCALANCE SC646-2C	`—`	—

Vendors and products

Weakness classes (CWE)

CWE-187Partial String Comparison
Variant
The product performs a comparison that only examines a portion of a factor before determining whether there is a match, such as a substring, leading to resultant weaknesses.
Entry at MITRE CWE-187

References & sources

Siemens ProductCERTproductcert/html/ssa-280834.html

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<a href="https://intel.neosec.eu/en/cve/CVE-2025-23384"><img src="https://intel.neosec.eu/badge/cve/CVE-2025-23384.svg?lang=en" alt="CVE-2025-23384 – NEOSEC Intel" height="20"></a>