Is CVE-2025-40551 in the CISA KEV catalog?

Yes. CVE-2025-40551 is on the CISA Known Exploited Vulnerabilities list, added 2026-02-03.

What is the CVSS severity of CVE-2025-40551?

CVE-2025-40551 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2025-40551?

CVE-2025-40551 has an EPSS score of 84.13% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2025-40551

CRITICALCISA KEVEPSS 100th pctl

9.8

CVSS v3

NVD

Description

SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.

CWE-502Deserialization of Untrusted Data

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

84.13%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-02-06

References

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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 2026-02-04.