FortiOS

CVE-2018-13382: FortiOS and FortiProxy Improper Authorization

An Improper Authorization vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8 and 5.4.1 to 5.4.10 and FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7 under SSL VPN web portal allows an unauthenticated attacker to modify the password of an SSL VPN web portal user via specially crafted HTTP requests

Published

ExploitedYes, in CISA KEVAdded 10 Jan 2022
Ransomware useKnownPer CISA
SeverityCRITICALCVSS 3.1 9.1
EPSS82%Chance of exploitation in 30 days
Public exploitNot tracked
FixNot yet

Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.

Affected and fixed versions

Product / branchFixed in
Fortinet FortiOS, FortiProxy FortiOS 6.0See the advisory

Always confirm against the vendor advisory, which lists every fixed hotfix.

What it is

An Improper Authorization vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.8 and 5.4.1 to 5.4.10 and FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7 under SSL VPN web portal allows an unauthenticated attacker to modify the password of an SSL VPN web portal user via specially crafted HTTP requests

Exploitation

CISA lists this CVE as exploited in the wild since 10 Jan 2022, including in ransomware campaigns.

Sources

KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.

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