How severe is CVE-2025-40942?

CVE-2025-40942 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-40942 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-40942?

CVE-2025-40942 affects Siemens Telecontrol Server Basic. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-40942?

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-2025-40942 have an EU (EUVD) identifier?

Yes. CVE-2025-40942 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2361.

When was CVE-2025-40942 published?

CVE-2025-40942 was published on 2026-01-13 and last updated on 2026-06-17.

CVE-2025-40942

CVE-2025-40942 is a high-severity vulnerability in Siemens Telecontrol Server Basic with a CVSS 3.x base score of 8.8. 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-250.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.3
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2361
Weakness: CWE-250
Affected product: Siemens Telecontrol Server Basic
Published: 2026-01-13
Last modified: 2026-06-17

Description

A vulnerability has been identified in TeleControl Server Basic (All versions < V3.1.2.4). Affected application contains a local privilege escalation vulnerability that could allow an attacker to run arbitrary code with elevated privileges.

Frequently asked questions

What is CVE-2025-40942?: A vulnerability has been identified in TeleControl Server Basic (All versions < V3.1.2.4). Affected application contains a local privilege escalation vulnerability that could allow an attacker to run arbitrary code with elevated privileges.
How severe is CVE-2025-40942?: CVE-2025-40942 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-40942 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-40942?: CVE-2025-40942 affects Siemens Telecontrol Server Basic. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-40942?: 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-2025-40942 have an EU (EUVD) identifier?: Yes. CVE-2025-40942 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2361.
When was CVE-2025-40942 published?: CVE-2025-40942 was published on 2026-01-13 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/html/ssa-192617.html

Affected products (1)

cpe:2.3:a:siemens:telecontrol_server_basic:*:*:*:*:*:*:*:*

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