CVE-2021-43206

MEDIUM

Fortinet FortiOS <7.0.4 - Info Disclosure

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_confirm
https://fortiguard.com/psirt/FG-IR-21-231

Scores

CVSS v3 4.3
EPSS 0.0039
EPSS Percentile 60.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-209
Status published
Products (2)
fortinet/fortios 5.6.0 - 6.0.14
fortinet/fortiproxy 2.0.0 - 2.0.9
Published May 04, 2022
Tracked Since Feb 18, 2026