CVE-2026-84393
CVSS v3
8.1
HIGH
EPSS Score
0.2 %
exploit probability, as of 2026-09-29
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6, FortiProxy 7.6.2 through 7.6.6 may allow attacker to information disclosure via <insert attack vector here>
Technical details
- Published
- 2026-09-08
- Last Modified
- 2026-09-10
Frequently asked questions
What is CVE-2026-84393?
A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6, FortiProxy 7.6.2 through 7.6.6 may allow attacker to information disclosure via <insert attack vector here>
Is CVE-2026-84393 actively exploited?
Active exploitation of CVE-2026-84393 has not been confirmed. Its EPSS score was 0.2% on 2026-09-29, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-84393?
CVE-2026-84393 has a CVSS v3 base score of 8.1 (HIGH severity).
Is CVE-2026-84393 affecting your environment?
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