CVE-2025-26399SolarWinds Web Help Desk Deserialization of Untrusted Data Vulnerability
CISA Known Exploited Vulnerabilities Data
Description
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 Due Date
March 12, 2026 (federal agency requirement)
Known Ransomware Campaign Use
Unknown
Notes
https://www.solarwinds.com/trust-center/security-advisories/cve-2025-26399 ; https://documentation.solarwinds.com/en/success_center/whd/content/release_notes/whd_12-8-7-hotfix-1_release_notes.htm ; https://nvd.nist.gov/vuln/detail/CVE-2025-26399
External References
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Data sourced from the CISA Known Exploited Vulnerabilities catalog. CISA does not endorse any commercial product or service.