CVE-2025-26399 — SolarWinds Web Help Desk: SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
CVE-2025-26399 — 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.
What This Means For You
- CISA has confirmed active exploitation — immediate patching required.
- Added to CISA KEV catalog — federal agencies must remediate by 2026-03-12.
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2025-26399 | Deserialization | SolarWinds Web Help Desk, AjaxProxy component, deserialization of untrusted data vulnerability |
| CVE-2025-26399 | RCE | SolarWinds Web Help Desk, AjaxProxy component, allows an attacker to run commands on the host machine |
Source & Attribution
| Source Platform | CISA |
| Channel | CISA KEV |
| Channel ID | cisa-kev |
| Message ID | 202526399 |
| Published | March 09, 2026 at 14:00 UTC |
| Original Link | https://www.solarwinds.com/trust-center/security-advisori... |
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