Is CVE-2025-40807 in the CISA KEV catalog?

No. CVE-2025-40807 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-40807?

CVE-2025-40807 has a CVSS v3 base score of 6.3 (MEDIUM).

What is the EPSS score for CVE-2025-40807?

CVE-2025-40807 has an EPSS score of 0.26% (17th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-40807?

Upgrade gridscale x prepay to 4.2.1 or later.

CVE & CISA-KEV Catalog

CVE-2025-40807

MEDIUM

6.3

CVSS v3

NVD

Description

A vulnerability has been identified in Gridscale X Prepay (All versions < V4.2.1). The affected application is vulnerable to capture-replay of authentication tokens. This could allow an authenticated but already locked-out user to establish still valid user sessions.

CWE-294

How to fix

Remediation Available

gridscale x prepayNVD

Affected:< 4.2.1Fixed in:4.2.1CVE-2025-40807derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Exploit Intelligence

0.26%probability of exploitation in 30 days

17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Vendor Advisory1

cert-portal.siemens.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-02.