How severe is CVE-2025-40831?

CVE-2025-40831 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-40831 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-40831?

CVE-2025-40831 affects Siemens Sinec Security Monitor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-40831?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-40831 have an EU (EUVD) identifier?

Yes. CVE-2025-40831 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201921.

When was CVE-2025-40831 published?

CVE-2025-40831 was published on 2025-12-09 and last updated on 2026-06-17.

CVE-2025-40831

CVE-2025-40831 is a medium-severity vulnerability in Siemens Sinec Security Monitor with a CVSS 3.x base score of 6.5. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 7.1
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201921
Weakness: CWE-20
Affected product: Siemens Sinec Security Monitor
Published: 2025-12-09
Last modified: 2026-06-17

Description

A vulnerability has been identified in SINEC Security Monitor (All versions < V4.10.0). The affected application lacks input validation of date parameter in report generation functionality. This could allow an authenticated, lowly privileged attacker to cause denial of service condition of the report functionality.

Frequently asked questions

What is CVE-2025-40831?: A vulnerability has been identified in SINEC Security Monitor (All versions < V4.10.0). The affected application lacks input validation of date parameter in report generation functionality. This could allow an authenticated, lowly privileged attacker to cause denial of service condition of the report functionality.
How severe is CVE-2025-40831?: CVE-2025-40831 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-40831 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-40831?: CVE-2025-40831 affects Siemens Sinec Security Monitor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-40831?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-40831 have an EU (EUVD) identifier?: Yes. CVE-2025-40831 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201921.
When was CVE-2025-40831 published?: CVE-2025-40831 was published on 2025-12-09 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/html/ssa-882673.html

Affected products (1)

cpe:2.3:a:siemens:sinec_security_monitor:*:*:*:*:*:*:*:*

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