CVE-2025-40551 — SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability

CVE-2025-40551 (SolarWinds Web Help Desk) is in the CISA Known Exploited Vulnerabilities catalog since 2026-02-03. SolarWinds Web Help Desk contains a deserialization of untrusted data vulnerability that could lead to… See the required fix, due date and advisories.

Exploitation status

CVE-2025-40551 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2026-02-03. SolarWinds Web Help Desk contains a deserialization of untrusted data 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.

Advisory facts

Vendor or project
SolarWinds
Affected product
Web Help Desk
Added to CISA KEV
2026-02-03
US federal remediation due date
2026-02-06
Ransomware association
Unknown
EPSS score
—
Weakness (CWE)
CWE-502

Remediation: the required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Wording published by CISA for this catalog entry. It is the baseline action, not a decision about your environment: whether this exposure matters for you depends on where the affected component runs, what it is exposed to and who owns it.

From advisory to a decision you can defend

A catalog entry tells you a vulnerability is being exploited somewhere. It does not tell you whether it matters in your estate, who owns the fix, or what evidence an auditor will ask for later. That is the work VulnTrek does: it takes findings from the tools you already run, decides which exposure actually matters, routes it to an owner, keeps remediation human-approved and retains the lineage as evidence.

Sourced from public upstream advisories (CISA KEV, ENISA EUVD, vendor PSIRTs) mirrored daily. Informational only — not a remediation decision, not legal advice, and the absence of a record is not evidence of safety.