CVE-2020-12812 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2021-11-03
An improper authentication vulnerability in FortiOS SSL VPN allows a user to bypass two-factor authentication (FortiToken). By changing the case of their username during login, an attacker can successfully authenticate without being prompted for the second factor.
Yes. CVE-2020-12812 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2020-12812?
Critical severity, with a CVSS score of 9.8, published 3 November 2021.
Which products and versions are affected?
Fortinet FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below.
Is there a fix for CVE-2020-12812?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2020-12812 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2020-12812?
Check whether you run Fortinet FortiOS. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Fortinet FortiOS 6.4.0, 6.2.0 to 6.2.3, 6.0.9 and below
Timeline
2020-07-24: disclosed: NVD Published Date
2021-11-03: kev added: Date added to CISA Known Exploited Vulnerabilities Catalog
2021-11-03: exploited: Reported exploited in the wild per advisory summary and CISA KEV entry.