#VU116030 Deserialization of Untrusted Data in Web Help Desk - CVE-2025-26399

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Main Vulnerability Database Vulnerabilities #VU116030

#VU116030 Deserialization of Untrusted Data in Web Help Desk - CVE-2025-26399

Published: September 23, 2025 / Updated: March 9, 2026


Vulnerability identifier: #VU116030
Vulnerability risk: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2025-26399
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild
Vulnerable software:
Web Help Desk
Software vendor:
SolarWinds

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data within the AjaxProxy. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, the vulnerability exists due to unsuccessful patching addressed in #VU98770 (CVE-2024-28988) and #VU96009 (CVE-2024-28986).


Remediation

Install updates from vendor's website.

External links