Page generated: 10 Nov 2026, 17:38 UTC
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CVE-2020-12812

An improper authentication vulnerability in SSL VPN in FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below may result in a user being able to log in successfully without being prompted for the second factor of authentication (FortiToken) if they changed the case of their username.

CVSS 7.5 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.4/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 7.5: +1.12
  • Fresh EPSS: 45.38%: +0.23

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 14 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Cybersecurity Dive
Press · 05 Jan 2026, 08:00 · Thousands of firewalls at risk as legacy flaw in Fortinet faces renewed threat - Cybersecurity Dive
BleepingComputer
Press · 02 Jan 2026, 08:00 · Over 10K Fortinet firewalls exposed to actively exploited 2FA bypass - BleepingComputer
SecurityWeek
Press · 29 Dec 2025, 08:00 · Fortinet Warns of New Attacks Exploiting Old Vulnerability - SecurityWeek
BleepingComputer
Press · 29 Dec 2025, 08:00 · Fortinet warns of 5-year-old FortiOS 2FA bypass still exploited in attacks - BleepingComputer
CISO Series
Press · 26 Dec 2025, 08:00 · Cybersecurity News: Fortinet VPN exploit, Google gmail change, Aflac breach update - CISO Series
See all 14 source documents
Cyber Press
Press · 25 Dec 2025, 08:00 · Hackers Abuse 3-Year-Old FortiGate Flaw to Bypass Firewall 2FA Protections - Cyber Press
The Hacker News
Press · 25 Dec 2025, 08:00 · Fortinet Warns of Active Exploitation of FortiOS SSL VPN 2FA Bypass Vulnerability - The Hacker News
Security Affairs
Press · 25 Dec 2025, 08:00 · Five-year-old Fortinet FortiOS SSL VPN vulnerability actively exploited - Security Affairs
CyberSecurityNews
Press · 25 Dec 2025, 08:00 · Hackers Exploiting Three-Year-Old FortiGate Vulnerability to Bypass 2FA on Firewalls - CyberSecurityNews
SOCRadar
Press · 05 Jun 2023, 07:00 · Dark Web Profile: Play Ransomware - SOCRadar
The Hacker News
Press · 18 Aug 2021, 07:00 · Unpatched Remote Hacking Flaw Disclosed in Fortinet's FortiWeb WAF - The Hacker News
The Hacker News
Press · 29 Jul 2021, 07:00 · Top 30 Critical Security Vulnerabilities Most Exploited by Hackers - The Hacker News
Qualys
Press · 28 Jul 2021, 07:00 · CISA Alert: Top Routinely Exploited Vulnerabilities - Qualys
BleepingComputer
Press · 02 Apr 2021, 07:00 · FBI and CISA warn of state hackers attacking Fortinet FortiOS servers - BleepingComputer

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.4 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 7.5; EPSS 45.4%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:58:13.266659+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
24 Jul 2020, 22:28
First press mention
02 Apr 2021, 07:00
Added to the CISA KEV catalog
03 Nov 2021, 00:00
Latest press mention
05 Jan 2026, 08:00
Score calculated
05 Nov 2026, 13:58