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Sinec Nms CVE-2024-41940

CRITICAL
Improper Input Validation (CWE-20)
2024-08-13 productcert@siemens.com
9.4
CVSS 4.0 · Vendor: siemens
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Impact

CVSS score of 9.4 (CRITICAL). Attack characteristics: network attack vector, low complexity, high privileges required, no user interaction not required.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAI

A vulnerability has been identified in SINEC NMS (All versions < V3.0). Rated critical severity (CVSS 9.4), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-20. A vulnerability has been identified in SINEC NMS (All versions < V3.0). The affected application does not properly validate user input to a privileged command queue. This could allow an authenticated attacker to execute OS commands with elevated privileges. Affected products include: Siemens Sinec Nms.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (siemens) PRIMARY 9.4 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (siemens) · only source for this CVE.

CVSS VectorVendor: siemens

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
High
Subsequent system: Integrity
High
Subsequent system: Availability
High

DescriptionCVE.org

A vulnerability has been identified in SINEC NMS (All versions < V3.0). The affected application does not properly validate user input to a privileged command queue. This could allow an authenticated attacker to execute OS commands with elevated privileges.

Threat Intelligence Overview

EPSS Score
0.6%
Top 57% exploitable
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.6%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

48
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +47
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:a:siemens:sinec_nms:*:*:*:*:*:*:*:*
CVE-2021-40438 CRITICAL POC
9.0 Sep 16

A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user.4.4

CVE-2021-3449 MEDIUM
5.9 Mar 25

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. Rated med

CVE-2026-25654 HIGH
8.7 Apr 14

SINEC NMS versions prior to V4.0 SP3 allow authenticated remote attackers to reset any user account password due to impr

CVE-2021-42550 MEDIUM POC
6.6 Dec 16

In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could

CVE-2025-40736 CRITICAL
9.8 Jul 08

A vulnerability has been identified in SINEC NMS (All versions < V4.0). The affected application exposes an endpoint tha

CVE-2024-23810 CRITICAL
9.8 Feb 13

A vulnerability has been identified in SINEC NMS (All versions < V2.0 SP1). Rated critical severity (CVSS 9.8), this vul

CVE-2021-39275 CRITICAL
9.8 Sep 16

ap_escape_quotes() may write beyond the end of a buffer when given malicious input. Rated critical severity (CVSS 9.8),

CVE-2021-33725 CRITICAL
9.1 Oct 12

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). Rated critical severity (CVSS 9.1),

CVE-2021-33724 CRITICAL
9.1 Oct 12

A vulnerability has been identified in SINEC NMS (All versions < V1.0 SP2 Update 1). Rated critical severity (CVSS 9.1),

CVE-2026-24032 MEDIUM
6.9 Apr 14

Authentication bypass in Siemens SINEC NMS versions prior to V4.0 SP3 with UMC allows unauthenticated remote attackers t

CVE-2025-40738 HIGH
8.8 Jul 08

A vulnerability has been identified in SINEC NMS (All versions < V4.0). The affected application does not properly valid

CVE-2025-40737 HIGH
8.8 Jul 08

A vulnerability has been identified in SINEC NMS (All versions < V4.0). The affected application does not properly valid

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