How severe is CVE-2025-40770?

CVE-2025-40770 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-40770 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-40770?

CVE-2025-40770 affects Siemens Sinec Traffic Analyzer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-40770?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-40770 have an EU (EUVD) identifier?

Yes. CVE-2025-40770 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24232.

When was CVE-2025-40770 published?

CVE-2025-40770 was published on 2025-08-12 and last updated on 2026-06-17.

CVE-2025-40770

CVE-2025-40770 is a high-severity vulnerability in Siemens Sinec Traffic Analyzer with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-300.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v4: 7.5
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-24232
Weakness: CWE-300
Affected product: Siemens Sinec Traffic Analyzer
Published: 2025-08-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-40770?: 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.
How severe is CVE-2025-40770?: CVE-2025-40770 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-40770 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-40770?: CVE-2025-40770 affects Siemens Sinec Traffic Analyzer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-40770?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-40770 have an EU (EUVD) identifier?: Yes. CVE-2025-40770 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24232.
When was CVE-2025-40770 published?: CVE-2025-40770 was published on 2025-08-12 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/html/ssa-517338.html

Affected products (1)

cpe:2.3:a:siemens:sinec_traffic_analyzer:*:*:*:*:*:*:*:*

More vulnerabilities in Siemens Sinec Traffic Analyzer

CVE-2025-40767 — High (CVSS 7.8): A vulnerability has been identified in SINEC Traffic Analyzer (6GK8822-1BG01-0BA0) (All versions < V3.0). The affected…
CVE-2024-35207 — High (CVSS 7.8): A vulnerability has been identified in SINEC Traffic Analyzer (6GK8822-1BG01-0BA0) (All versions < V1.2). The web…
CVE-2024-35206 — High (CVSS 7.7): A vulnerability has been identified in SINEC Traffic Analyzer (6GK8822-1BG01-0BA0) (All versions < V1.2). The affected…
CVE-2024-41904 — High (CVSS 7.5): A vulnerability has been identified in SINEC Traffic Analyzer (6GK8822-1BG01-0BA0) (All versions < V2.0). The affected…
CVE-2025-40768 — High (CVSS 7.3): A vulnerability has been identified in SINEC Traffic Analyzer (6GK8822-1BG01-0BA0) (All versions < V3.0). The affected…
CVE-2024-41905 — Medium (CVSS 6.8): A vulnerability has been identified in SINEC Traffic Analyzer (6GK8822-1BG01-0BA0) (All versions < V2.0). The affected…

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