Forti Web CVE‑2025‑64446: What We’re Seeing in the Wild

Summary: GreyNoise observed active exploitation of CVE-2025-64446, a critical path-traversal flaw allowing unauthenticated administrative command execution on Fortinet FortiWeb appliances, with the first exploit traffic hitting its sensors on November 17, 2025, roughly 72 hours after the vulnerability entered CISA's KEV catalog on November 13th. The probing came from eight distinct IPs across seven hosting providers, using a traversal string against the management API to reach the internal cgi-bin endpoint, with a dominant JA3 fingerprint of 9b72665518dedb3531426284fdec8237 and some nodes identifying as python-requests/2.25.1 or node.js.
What you should know: Three of the observed IPs have a history of scanning for other enterprise edge vulnerabilities like CrushFTP, Confluence OGNL, Sophos XG, and Ivanti Connect Secure, and two of the source IPs sit in bulletproof hosting - signals GreyNoise reads as initial-access broker and ransomware affiliate behavior rather than a short-lived scan.

Read the original at GreyNoise Blog ↗

Topics: Vulnerabilities & Patching
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