SolarWinds Web Help Desk Untrusted Data Deserialization Enables RCE
CVE-2025-40553 Published on January 28, 2026
SolarWinds Web Help Desk Deserialization of Untrusted Data Remote Code Execution Vulnerability
SolarWinds Web Help Desk was found to be susceptible to an untrusted data deserialization vulnerability that could lead to remote code execution, which would allow an attacker to run commands on the host machine. This could be exploited without authentication.
Vulnerability Analysis
CVE-2025-40553 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. An automatable proof of concept (POC) exploit exists. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Marshaling, Unmarshaling Vulnerability?
The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.
CVE-2025-40553 has been classified to as a Marshaling, Unmarshaling vulnerability or weakness.
Products Associated with CVE-2025-40553
Want to know whenever a new CVE is published for SolarWinds Web Help Desk? stack.watch will email you.
Affected Versions
SolarWinds Web Help Desk Version 12.8.8 HF1 and below is affected by CVE-2025-40553Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.