CVE-2025-40770: Siemens SINEC Traffic Analyzer · Channel Accessible by Non-Endpoint
Affects Siemens SINEC Traffic AnalyzerSource CVE Database V5
Not known to be exploited · CVSS 7.4 High.
Data as of 26 Oct 2026, 10:12 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 12 Aug 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.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Siemens SINEC Traffic Analyzer | Affected
| Fixed in– |
AI-suggested
To mitigate CVE-2025-40770 effectively, European organizations should implement the following specific measures: 1) Restrict physical and network access to systems running SINEC Traffic Analyzer to trusted personnel only, employing strict network segmentation and access control lists (ACLs) to isolate monitoring interfaces from untrusted networks. 2) Employ network-level protections such as port security, MAC address filtering, and 802.1X authentication to prevent unauthorized devices from connecting to the monitoring network segments. 3) Monitor logs and network traffic for unusual activity around the SINEC Traffic Analyzer interfaces, focusing on unexpected interaction attempts or anomalous traffic patterns that could indicate exploitation attempts. 4) Use host-based intrusion detection systems (HIDS) on the monitoring system to detect unauthorized access or process anomalies. 5) Until Siemens releases a patch, consider disabling or limiting the use of interactive features of the monitoring interface if possible, or deploy compensating controls such as dedicated monitoring appliances that do not allow interaction. 6) Conduct regular security awareness training for staff with access to these systems to reduce insider threat risks. 7) Maintain up-to-date asset inventories and ensure rapid deployment of Siemens patches once available. 8) Engage with Siemens support and subscribe to their security advisories to receive timely updates.
Description
A vulnerability has been identified in SINEC Traffic Analyzer (6GK8822-1BG01-0BA0) (All versions). The affected application uses a monitoring interface that is not operating in a strictly passive mode. This could allow an attacker to interact with the interface, leading to man-in-the-middle attacks.