Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2025-40551

CVE-2025-40551CRITICAL

SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .8418   99.7   YES

AFFECTED
  Product        Versions                Fixed
  Web Help Desk  12.8.8 HF1 and below –  —

TIMELINE
  Apr 16  Reserved by SolarWinds
  Jan 28  Published (CNA: SolarWinds)
  Feb 3   Added to CISA KEV, remediation due 2026-02-06

CWE-502 · CNA: SolarWinds · CVSS v3.1 · 3 references · KEV due February 6, 2026

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 16, 2025	Reserved	Reserved by SolarWinds
January 28, 2026	Published	Published (CNA: SolarWinds)
February 3, 2026	KEV ADDED	Added to CISA KEV, remediation due 2026-02-06

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
SolarWinds	Web Help Desk	—	12.8.8 HF1 and below	—

Weaknesses

CWE-502

References (3)

https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm [release-notes]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-40551 [government-resource]
https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40551 [vendor-advisory, patch]

Authoritative record: CVE-2025-40551 at cve.org

Vendors: solarwinds

Weaknesses: CWE-502

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-40551 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.