CVE-2018-13382

HIGH
7.5
CVSS Score
Published: June 4, 2019 at 08:33 PM UTC
Updated: June 17, 2026 at 01:39 AM UTC
2 products affected across 1 vendorFortiOSFortiProxy

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Severity
HIGH7.5
Exploitation
CISA KEV
Exploit prediction
EPSS 82%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score81.7%

EPSS (Exploit Prediction Scoring System) estimates a 81.7% chance this CVE is exploited in the wild within the next 30 days — higher than 100% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

An Improper Authorization vulnerability in Fortinet FortiOS and FortiProxy under SSL VPN web portal allows an unauthenticated attacker to modify the password.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Known
Added to KEV
Jan 10, 2022
Remediation Due
Jul 10, 2022
1570 days overdue

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.0.75.4.1 ≤ v < 5.4.115.6.0 ≤ v < 5.6.96.0.0 ≤ v < 6.0.5
Affected range stops below 5.4.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.6.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.0.5, so it looks safe — our inference, not a vendor statement
v ≤ 1.0.7v < 1.2.92.0.0
Affected range stops below 1.2.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

x_refsource_CONFIRMVendor Advisory
https://fortiguard.com/advisory/FG-IR-18-389
x_refsource_CONFIRMVendor Advisory
https://www.fortiguard.com/psirt/FG-IR-20-231
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13382

SSVC — Action Prioritization

SSVCActiveAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-863

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