Risk Letters

Exploited vulnerability

CVE-2022-42475

TLP:CLEAR

Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability

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.

Facts

  • Vendor: Fortinet
  • Product: FortiOS
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 99.5 %
  • On CISA's Known Exploited Vulnerabilities list since: 13 December 2022
  • First known exploitation: 13 December 2022
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 3 January 2023
  • Weakness: CWE-197
  • First seen by Risk Letters: 13 December 2022

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD