CVE-2022-42475
Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability
Fortinet · FortiOS
Vulnerability details
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.
Added to CISA KEV: 2022-12-13
Ransomware campaign use: Known
CISA due date: 2023-01-03
Defensive guidance from CISA
Apply updates per vendor instructions.
This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.
Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC