critical Known exploitedREV. 01

CVE-2025-40536SolarWinds Web Help Desk — control gap reaches restricted functions

SolarWinds Web Help Desk lets an unauthenticated attacker around a control it relies on and reach functionality meant to be restricted. The advisory names neither the control nor the functions in question.

YOUR NEXT MOVE

Upgrade to the Web Help Desk 2026.1 release now; it sits alongside an actively exploited deserialization flaw, so patch both and review administrator activity.

Read the risk

THE VITAL STATS
CVSS score
9.8/ 10
CVSS v3.1
EPSS probability
82%
Likelihood of exploitation
Attack complexity
Low
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2026-01-28
Added to KEV
2026-02-12
Exploit published
Not recorded
Confidence
medium
Kill chain
initial access
MITRE ATT&CK
—
Severity
critical

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

Attacker needsNetwork access to the Web Help Desk interface; no credentials needed.

Behind the card

4 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-09-24scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-09-24scrty-crds-pipeline/0.1high
epssapi.first.org2026-09-24scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-09-24claude-codehigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2025-40536 · CRDS 0.1 · Issued 2026-09-24