CVE-2025-26399

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.

  • Published Sep 23, 2025
  • CVSS 9.8 critical
  • 89.5% chance of exploitation in the next 30 days (EPSS)
  • In CISA's Known Exploited Vulnerabilities catalog
  • A fix is available

Affected software

CVE-2025-26399 at the National Vulnerability Database