CVE-2025-40551

SolarWinds — SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability

CISA KEV · in the CISA KEV catalog since 2026-02-03

What EVULNABLE says

EVULNABLE Risk · priority 85/100 Immediate Intelligence coverage 75/90 — no pre-patch disclosure data
Overdue by 7 monthsCISA KEVActively Exploited

Why it matters: Listed in the CISA KEV catalog, and an EPSS probability of 0.836.

Patch Immediately

The priority band answers “how soon”, not “how bad” — see Methodology for what it weighs and where it abstains.

The evidence behind it

Published measurements for CVE-2025-40551
MeasureValueSource
CVSS base score 9.8 NVD
FIRST EPSS 0.836 (99.67th pctl) FIRST
Actively exploited Confirmed CISA KEV
Ransomware campaign use Unknown or none CISA KEV
CISA remediation deadline 2026-02-06 — Overdue by 7 months CISA KEV
Intelligence coverage 75/90 — no pre-patch disclosure data

What CISA says to do

This page is an opinion about urgency. Where it and a source of record disagree, the source of record is the record.