CVE-2025-40536

SolarWinds Web Help Desk Security Control Bypass Vulnerability

  • High 8.1
  • Exploited: added to CISA KEV 12 Feb 2026

Description

SolarWinds Web Help Desk was found to be susceptible to a security control bypass vulnerability that if exploited, could allow an unauthenticated attacker to gain access to certain restricted functionality.

Key facts

Published
28 Jan 2026
Last changed
26 Feb 2026
Assigned by
SolarWinds
KEV added
12 Feb 2026
KEV fix due
15 Feb 2026
EPSS
73.562% likely to be exploited in the next 30 days, higher than 99.474% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 8.1CVSS 3.1, Highfrom the CNA (SolarWinds)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

What to do

  • SolarWinds recommends customers upgrade to Web Help Desk version 2026.1.CNA solution statement
  • Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

CAPEC-153 Input Data Manipulation (CNA impact statement)

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
SolarWindsWeb Help Desk
  • Default status: affected
  • 12.8.8 HF1 and below (affected)

Timeline

  1. 28 Jan 2026 Published
  2. 12 Feb 2026 CVE-2025-40536 added to CISA KEV
  3. 12 Feb 2026 Added to the CISA KEV catalogue

Weakness

References