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CVE-2025-40735VulnerabilityPublished

CVE-2025-40735: Siemens SINEC NMS · SQL Injection

Affects Siemens SINEC NMSSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High : upgrade to 4.0 soon.

Data as of 25 Oct 2026, 19:02 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jul 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 2026-10-25.

What to do

Upgrade Siemens SINEC NMS to 4.0.

Affected software

ProductAffectedFixed in
Siemens SINEC NMSAffected
  • =0
  • <4.0
Fixed in
  • 4.0

AI-suggested

1. Immediate network segmentation: Isolate SINEC NMS servers from general IT networks and restrict access to trusted management stations only. 2. Implement strict firewall rules and access control lists (ACLs) to limit inbound traffic to the SINEC NMS interfaces, allowing only authorized IP addresses and protocols. 3. Employ Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting SINEC NMS. 4. Monitor network and application logs for unusual database queries or access patterns indicative of exploitation attempts. 5. Coordinate with Siemens for timely release and deployment of official patches or updates addressing CVE-2025-40735. 6. Conduct thorough input validation and sanitization on any custom integrations or scripts interfacing with SINEC NMS to prevent injection vectors. 7. Perform regular vulnerability assessments and penetration testing focused on industrial network management systems. 8. Develop and rehearse incident response plans specific to industrial control system compromises to minimize impact if exploitation occurs.

Description

A vulnerability has been identified in SINEC NMS (All versions < V4.0). The affected devices are vulnerable to SQL injection. This could allow an unauthenticated remote attacker to execute arbitrary SQL queries on the server database.

References

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