Fortinet Flaw: Five-Year-Old Bug Still Haunting IT Teams in 2025!
Fortinet’s five-year-old security flaw, CVE-2020-12812, is back in action, this time with a case of mistaken identity. If “Jsmith” logs in instead of “jsmith,” it’s like getting into a secret club with the wrong password. Fortinet suggests disabling username sensitivity to avoid mixing up VIPs with the riffraff.

Hot Take:
Looks like Fortinet’s old skeletons are dancing in the cybersecurity closet again! Who knew that a forgotten five-year-old vulnerability could still crash the party? Time to dust off those forgotten configurations and give them a makeover before the hackers RSVP!
Key Points:
- Fortinet’s five-year-old vulnerability, CVE-2020-12812, is back in the spotlight with active exploitation.
- The vulnerability allows bypassing two-factor authentication under specific configurations.
- FortiOS updates have been issued to mitigate the issue, urging users to update their systems.
- Case-sensitive username matching is at the heart of this vulnerability, causing security bypasses.
- Organizations are advised to disable username-case-sensitivity and check for suspicious activity.
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