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CVE-2025-40554

CriticalPublished

SolarWinds Web Help Desk Authentication Bypass Vulnerability

Published: Jan 28, 2026
Updated: Feb 26, 2026
Assigning CNA: SolarWinds
Evidence observed: Aug 8, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

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

EPSS probability estimate

59.2%

High · next 30 days

Percentile: 99.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

auth-bypass-CVE-2025-40554PoC
Proof-of-concept exploit for CVE-2025-40554, an authentication bypass in SolarWinds Web Help Desk. Includes Nuclei template and Python exploit for single or batch target testing with optional credential login.
CVE-2025-40554Exploit
CVE-2025-40554 Exploitation

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