CVE-2020-12812 - Vulnerability Details

Related Threat Clusters

• Over 10,000 Fortinet Firewalls Vulnerable to 2FA Bypass Exploits

  More than 10,000 Fortinet firewalls remain exposed to a critical two-factor authentication bypass vulnerability (CVE-2020-12812) that has been actively exploited. This flaw, first disclosed in July 2020, continues to…

  6 articles · Updated January 5, 2026
• Fortinet VPN Exploit Actively Targeted in Real-World Attacks

  Fortinet has reported that a five-year-old security vulnerability in its FortiOS SSL VPN software, identified as CVE-2020-12812, is being actively exploited in real-world attacks. This flaw allows attackers to bypass…

  4 articles · Updated December 26, 2025
• Over 10,000 Fortinet Firewalls Vulnerable to MFA Bypass Flaw

  More than 10,000 Fortinet firewalls globally are still exposed to CVE-2020-12812, a multi-factor authentication bypass vulnerability. This flaw, linked to improper authentication in FortiOS SSL VPN, was disclosed over…

  2 articles · Updated January 2, 2026
• Fortinet Reports Active Exploitation of CVE-2020-12812 Vulnerability

  Fortinet has reported active attacks exploiting a five-year-old vulnerability in FortiOS, tracked as CVE-2020-12812. This flaw allows threat actors to bypass two-factor authentication, posing significant risks to…

  3 articles · Updated December 29, 2025
• Fortinet FortiGate Flaw Exploited by Cybercriminals

  Cybercriminals are exploiting a long-patched vulnerability in Fortinet FortiGate firewalls, allowing them to bypass two-factor authentication (2FA). This flaw, identified as FG-IR-19-283 (CVE-2020-12812), may grant…

  2 articles · Updated December 25, 2025

Recent Intelligence Reports

• Patch now! Attacks on Adobe ColdFusion and Fortinet firewalls observed — Heise.De · January 5, 2026
• Ten thousand firewalls are vulnerable to old vulnerability — Csoonline · January 5, 2026
• Thousands of firewalls at risk as legacy flaw in Fortinet faces renewed threat — Cybersecuritydive · January 5, 2026
• Thousands of Fortinet firewalls face critical authentication flaw — Sdxcentral · January 5, 2026
• 10,000+ Fortinet Firewalls Exposed To 5-Year — Linkedin · January 2, 2026
• Over 10K Fortinet firewalls exposed to actively exploited 2FA bypass — Bleepingcomputer · January 2, 2026
• 10,000+ Fortinet Firewalls Still Exposed to 5 — Cybersecuritynews · January 2, 2026
• Fortinet Warns of New Attacks Exploiting Old Vulnerability — Feeds.Feedburner · December 29, 2025

Related Entities