CVE-2025-26399

🔥 Known Exploited (CISA KEV)CRITICAL

9.8

CVSS Severity Score

EPSS Score0.0000%

EPSS Percentile0.00th

Published2025-09-23

Last Modified2026-06-17

Data SourcesNVDCISA KEV

Vulnerability Description

SolarWinds Web Help Desk was found to be susceptible to an unauthenticated AjaxProxy deserialization remote code execution vulnerability that, if exploited, would allow an attacker to run commands on the host machine. This vulnerability is a patch bypass of CVE-2024-28988, which in turn is a patch bypass of CVE-2024-28986.

Affected Platforms (CPE)

📦

Solarwinds

Web Help Desk

<= 12.8.6= 12.8.7

References & Advisories

🔗 https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7-hotfix-1_release_notes.htm

🔗 https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-26399

🔗 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-26399

🔗 https://www.microsoft.com/en-us/security/blog/2026/02/06/active-exploitation-solarwinds-web-help-desk/

Vulnerability Description

Affected Platforms (CPE)

Web Help Desk

References & Advisories

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