CVE-2019-16155

HIGH

FortiClient for Linux <6.2.1-6.2.2 - Privilege Escalation

Title source: llm

Description

A privilege escalation vulnerability in FortiClient for Linux 6.2.1 and below may allow a user with low privilege to overwrite system files as root with arbitrary content through system backup file via specially crafted "BackupConfig" type IPC client requests to the fctsched process. Further more, FortiClient for Linux 6.2.2 and below allow low privilege user write the system backup file under root privilege through GUI thus can cause root system file overwrite.

References (2)

Core 2

Core References

Vendor Advisory x_refsource_confirm

https://fortiguard.com/psirt/FG-IR-19-238

Exploit, Third Party Advisory x_refsource_misc

https://danishcyberdefence.dk/blog/forticlient_linux

Scores

CVSS v3 7.1

EPSS 0.0013

EPSS Percentile 31.3%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

Status published

Products (1)

fortinet/forticlient < 6.2.1

Published Feb 07, 2020

Tracked Since Feb 18, 2026