CISA Flags Actively Exploited SolarWinds WHD Flaw Issue
⚠ CISA has added a critical SolarWinds Web Help Desk vulnerability, CVE-2025-40551, to its Known Exploited Vulnerabilities catalog and flagged it as actively exploited. The flaw is an untrusted data deserialization vulnerability that can enable remote code execution without authentication, allowing attackers to run commands on affected hosts. SolarWinds released patches in WHD version 2026.1 that also address several related high-severity CVEs. Federal Civilian Executive Branch agencies are required to remediate this flaw under BOD 22-01, with a February 6, 2026, deadline.
