CVE-2021-43206

4.3 mediumEPSS 0.8%

Medium (4.3) in fortinet. EPSS 0.8% chance of exploitation in the next 30 days.

A server-generated error message containing sensitive information in Fortinet FortiOS 7.0.0 through 7.0.3, 6.4.0 through 6.4.8, 6.2.x, 6.0.x and FortiProxy 7.0.0 through 7.0.1, 2.0.x allows malicious webservers to retrieve a web proxy's client username and IP via same origin HTTP requests triggering proxy-generated HTTP status codes pages.

Severity

CVSS 3.1

4.3 medium

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

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 57% of CVEs (scores of 2026-10-31)
CWE: CWE-209
Published: 2022-05-04
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fortinet:fortios
fortinet:fortiproxy

References

https://fortiguard.com/psirt/FG-IR-21-231
https://fortiguard.com/psirt/FG-IR-21-231

Check your stack JSON