CVE-2025-26399
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
Summary
SolarWinds Web Help Desk contain a deserialization of untrusted data vulnerability in AjaxProxy that could allow an attacker to run commands on the host machine.
Affected software
Vendor: SolarWinds · Product: Web Help Desk
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in SolarWinds
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2024-28995 | SolarWinds Serv-U Path Traversal Vulnerability | 99.6% | Yes |
| CVE-2024-28987 | SolarWinds Web Help Desk Hardcoded Credential Vulnerability | 93.3% | Yes |
| CVE-2020-10148 | SolarWinds Orion Authentication Bypass Vulnerability | 92.0% | Yes |
| CVE-2021-35211 | SolarWinds Serv-U Remote Code Execution Vulnerability | 91.2% | Yes |
| CVE-2024-28986 | SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability | 84.6% | Yes |
| CVE-2025-40551 | SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability | 83.6% | Yes |
| CVE-2025-40536 | SolarWinds Web Help Desk Security Control Bypass Vulnerability | 71.5% | Yes |
| CVE-2026-28318 | SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability | 8.4% | Yes |
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