Patch-to-exploitation timelines for edge appliances (Fortinet, SonicWall, Ivanti), with detection rules.
Vendor: Fortinet
Product: FortiOS and FortiProxy
EPSS: 0.072 (94.3th percentile, 2026-10-30)
Known ransomware use: Known
FortiOS and FortiProxy are affected by a flaw that lets a remote unauthenticated attacker with prior knowledge of upstream and downstream devices’ serial numbers gain super-admin privileges via crafted CSF proxy requests. CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 2025-03-18, and it is known to be used by ransomware.
Automated summary, checked against CISA and vendor descriptions; not yet reviewed by an analyst.
| Date | Event | Source |
|---|---|---|
| 2025-03-18 | Added to CISA KEV (confirmed exploitation) | CISA KEV |
Affected and fixed versions: see the vendor advisory or NVD entry below.