Oct 20, 2026 · 19:00 UTC SEARCH
UNRATED KNOWN EXPLOITED RANSOMWARE USE
Vulnerability intelligence

CVE-2025-26399

VendorSolarWinds
ProductWeb Help Desk
Known exploitedYes
Added to CISA KEVMarch 9, 2026
KEV due dateMarch 12, 2026
Known ransomware useKnown

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.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA KEV status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities Catalog. Known ransomware campaign use: Known.

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