CVE-2025-26399Used in ransomware
SO
SolarWinds Web Help Desk
SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
What it is
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 to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor notices and references
- www.solarwinds.com/trust-center/security-advisories/cve-2025-26399
- documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7-hotfix
- nvd.nist.gov/vuln/detail/CVE-2025-26399
Description and required action as published by CISA. Full record at NVD.
Other SolarWinds entries on the list
- Serv-U SolarWinds Serv-U Uncontrolled Resource Consumption Vulnerability CVE-2026-28318 · Jun 5, 2026
- Web Help Desk SolarWinds Web Help Desk Security Control Bypass Vulnerability CVE-2025-40536 · Feb 12, 2026
- Web Help Desk SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability CVE-2025-40551 · Feb 3, 2026
- Web Help Desk SolarWinds Web Help Desk Hardcoded Credential Vulnerability CVE-2024-28987 · Oct 15, 2024
- Web Help Desk SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability CVE-2024-28986 · Aug 15, 2024
- Serv-U SolarWinds Serv-U Path Traversal Vulnerability CVE-2024-28995 · Jul 17, 2024