CVE-2021-36167

5.3 mediumEPSS 0.6%

Medium (5.3) in fortinet forticlient. EPSS 0.6% chance of exploitation in the next 30 days.

An improper authorization vulnerabiltiy [CWE-285] in FortiClient Windows versions 7.0.0 and 6.4.6 and below and 6.2.8 and below may allow an unauthenticated attacker to bypass the webfilter control via modifying the session-id paramater.

Severity

CVSS 3.1

5.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
Published: 2021-12-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fortinet:forticlient

References

https://fortiguard.com/advisory/FG-IR-20-127
https://fortiguard.com/advisory/FG-IR-20-127

Check your stack JSON