Fortinet FortiOS
YES - ON THE CISA KEV LIST
CVE-2022-42475
Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability
overdue since 2023-01-03
Fortinet: 32 entries (1.8% of all KEV entries are from this vendor); 9 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
Multiple versions of Fortinet FortiOS SSL-VPN contain a heap-based buffer overflow vulnerability which can allow an unauthenticated, remote attacker to execute arbitrary code or commands via specifically crafted requests.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://www.fortiguard.com/psirt/FG-IR-22-398; https://nvd.nist.gov/vuln/detail/CVE-2022-42475
References
Other KEV entries for this vendor: Fortinet
- CVE-2025-61624 - Multiple Products (2026-10-16)
- CVE-2026-104286 - FortiMail (2026-10-01)
- CVE-2025-25249 - Multiple Products (2026-09-09)
- CVE-2025-68686 - FortiOS (2026-07-27)
- CVE-2026-25089 - FortiSandbox (2026-07-16)
- CVE-2026-39808 - FortiSandbox (2026-07-16)
- CVE-2026-21643 - FortiClient EMS (2026-04-13)
- CVE-2026-35616 - FortiClient EMS (2026-04-06)
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