CISA Adds Actively Exploited SolarWinds Web Help Desk RCE to KEV Catalog

Feb 4, 2026

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added a critical security flaw impacting SolarWinds Web Help Desk (WHD) to its Known Exploited Vulnerabilities (KEV) catalog, flagging it as actively exploited in attacks.
The vulnerability, tracked as CVE-2025-40551 (CVSS score: 9.8), is a untrusted data deserialization vulnerability that could pave the way for remote

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