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Critical severity9.8CISA KEVNVD Advisory· Published Jul 24, 2020· Updated Aug 12, 2026

CVE-2020-12812

CVE-2020-12812

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Fortinet/Fortios3 versions
    cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*range: <6.0.10
    • cpe:2.3:o:fortinet:fortios:6.4.0:*:*:*:*:*:*:*
    • (no CPE)range: 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below

Patches

Vulnerability mechanics

References

2

News mentions

1