VulnerabilityPublished 14 Oct 2025Updated 25 Nov 2025

CVE-2025-40755: Siemens SINEC NMS · SQL Injection

Affects Siemens SINEC NMSSource CVE Database V5

Not known to be exploited · CVSS 8.8 High.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score

8.8High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 14 Oct 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Siemens SINEC NMS	Affected =0	Fixed in–

AI-suggested

Organizations should prioritize upgrading Siemens SINEC NMS to version 4.0 SP1 or later once the patch is released. Until then, restrict access to the getTotalAndFilterCounts endpoint by implementing network segmentation and firewall rules to limit access to trusted administrators only. Employ strong authentication mechanisms and monitor for unusual query patterns or access attempts indicative of SQL injection attempts. Implement Web Application Firewall (WAF) rules tailored to detect and block SQL injection payloads targeting the vulnerable endpoint. Conduct regular security audits and code reviews of custom integrations with SINEC NMS to ensure no additional injection vectors exist. Additionally, consider deploying intrusion detection systems (IDS) with signatures for SQL injection and anomalous database activity. Educate administrators on the risks of SQL injection and the importance of least privilege principles to minimize the impact of compromised credentials.

Description

CVE-2025-40755 is a high-severity SQL injection vulnerability in Siemens SINEC NMS versions prior to 4.0 SP1. It affects the getTotalAndFilterCounts endpoint and requires low-privileged authenticated access. Exploitation allows attackers to insert arbitrary SQL commands, potentially leading to privilege escalation and full compromise of the system's confidentiality, integrity, and availability. No user interaction is needed beyond authentication. Although no known exploits are currently in the wild, the vulnerability's ease of exploitation and impact make it a critical concern for organizations using SINEC NMS. European organizations relying on Siemens industrial network management solutions are particularly at risk. Mitigation requires applying vendor patches once available, restricting access to the management interface, and implementing strict input validation and monitoring. Countries with significant industrial infrastructure and Siemens deployments, such as Germany, France, Italy, and the UK, are most likely to be affected.

Impact

For European organizations, especially those in industrial sectors such as manufacturing, energy, and utilities, this vulnerability poses a substantial risk. Exploitation could lead to unauthorized access and control over network management infrastructure, potentially disrupting critical industrial processes and causing operational downtime. The compromise of confidentiality could expose sensitive network configurations and operational data, while integrity violations could allow attackers to alter network settings or inject malicious commands, leading to further compromise or sabotage. Availability impacts could result from denial-of-service conditions triggered by malicious queries or privilege escalations. Given Siemens' strong market presence in Europe, particularly in Germany, France, Italy, and the UK, organizations in these countries face heightened risk. The vulnerability could also be leveraged in targeted attacks by threat actors aiming to disrupt European industrial operations or conduct espionage.

Summary

CVE-2025-40755 is a vulnerability classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command, i.e., SQL Injection) found in Siemens SINEC NMS software versions earlier than 4.0 SP1. The vulnerability resides in the getTotalAndFilterCounts API endpoint, which does not properly sanitize user-supplied input before incorporating it into SQL queries. An attacker with low-level authenticated access can exploit this flaw to inject malicious SQL commands. This injection can lead to unauthorized data manipulation, including insertion of arbitrary data, which can escalate privileges within the system. The vulnerability has a CVSS 3.1 base score of 8.8, indicating high severity, with network attack vector, low attack complexity, requiring privileges but no user interaction, and impacting confidentiality, integrity, and availability. The flaw allows attackers to bypass normal access controls and potentially gain administrative control over the network management system, which is critical in industrial environments. Although no public exploits are currently reported, the vulnerability's characteristics suggest it could be weaponized rapidly. Siemens SINEC NMS is widely used in industrial network management, making this vulnerability a significant risk for operational technology environments.

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #2OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Architecture and Design · Parameterization
If available, use structured mechanisms that automatically enforce the separation between data and code. These mechanisms may be able to provide the relevant quoting, encoding, and validation automatically, instead of relying on the developer to provide this capability at every point where output is generated.
Architecture and Design · Operation · Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment.
OWASP Cheat Sheets
Query Parameterization (opens in a new tab)
Unvalidated Redirects and Forwards (opens in a new tab)
XML Security (opens in a new tab)
XML External Entity Prevention (opens in a new tab)
File Upload (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.4 (opens in a new tab)
V5.3.5 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
Command Line Execution through SQL Injection (opens in a new tab)
Object Relational Mapping Injection (opens in a new tab)
SQL Injection through SOAP Parameter Tampering (opens in a new tab)
Expanding Control over the Operating System from the Database (opens in a new tab)
SQL Injection (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

cert-portal.siemens.com/productcert/html/ssa-318832.html (opens in a new tab)

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 2 Dec 2025, 14:53 UTC

WeaknessesCWE-89

Technical details

References

Community reviews

Related threats