September 8, 2026

CVE Watchtower


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CVE-2020-12812NVD

Vulnerability Summary

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.
Severity Level
CRITICAL(9.8)
Published Date
Jul 24, 2020
Last Modified
Aug 12, 2026
Exploitation Status
ACTIVE
EPSS Score (30-Day)
49.34%Probability
Root Weakness (CWE)
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh