Published Nov 10, 2026Sources checked Nov 10, 2026
6.6MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-121530 and is rated Medium severity with a CVSS score of 6.6. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
CISA KEVNot listedBased on the latest collected catalog
EPSSUnavailableNo current score collected
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-121530?
A improper authentication vulnerability in Fortinet FortiOS 7.6.0 through 7.6.6 may allow a remote authenticated attacker to gain improper access control via an invalid token after entering a valid username and password