Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability (CVE-2022-42475)
Severity: critical · Patch status: patched · Since 2022-12-13 · CVE-2022-42475
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. CISA added CVE-2022-42475 to its Known Exploited Vulnerabilities catalog on Dec 13, 2022, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Jan 3, 2023 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
