CVE-2025-40554

CRITICAL 9.8

SolarWinds Web Help Desk Authentication Bypass Vulnerability

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

SolarWinds Web Help Desk was found to be susceptible to an authentication bypass vulnerability that, if exploited, could allow an attacker to invoke specific actions within Web Help Desk.

CWE	CWE-1390
Vendor	solarwinds
Product	web help desk
Published	Jan 28, 2026
Last Updated	Feb 26, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

SolarWinds / Web Help Desk

12.8.8 HF1 and below

References

NVD ↗ CVE.org ↗ EPSS Data ↗

solarwinds.com: https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40554 documentation.solarwinds.com: https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_2026-1_release_notes.htm

Credits

🔍 Piotr Bazydlo working with watchTowr