Deserialization of Untrusted Data in Web Help Desk - CVE-2025-40551

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Main Vulnerability Database Vulnerabilities #VU122156

Deserialization of Untrusted Data in Web Help Desk - CVE-2025-40551

Published: January 30, 2026 / Updated: February 13, 2026


Vulnerability identifier: #VU122156
CSH Severity: Critical
CVSS v4.0: 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-2025-40551
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild
Vendor: SolarWinds
Affected software:
Web Help Desk

Detailed vulnerability 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. A remote non-authenticated attacker can send 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.


How to mitigate CVE-2025-40551

Install updates from vendor's website.

Sources