Advisory Details

September 23rd, 2025

SolarWinds Web Help Desk AjaxProxy Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-25-906
ZDI-CAN-26042

CVE ID CVE-2025-26399
CVSS SCORE 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS SolarWinds
AFFECTED PRODUCTS Web Help Desk
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of SolarWinds Web Help Desk. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the AjaxProxy class. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

ADDITIONAL DETAILS SolarWinds has issued an update to correct this vulnerability. More details can be found at:
https://www.solarwinds.com/trust-center/security-advisories/cve-2025-26399
DISCLOSURE TIMELINE
  • 2025-08-26 - Vulnerability reported to vendor
  • 2025-09-23 - Coordinated public release of advisory
  • 2025-09-23 - Advisory Updated
CREDIT Anonymous
BACK TO ADVISORIES