CVE-2018-13383 - CVE House
Back to Database
Status published Medium CVE-2018-13383

A heap buffer overflow in Fortinet FortiOS 6.0.0 through 6.0.4,...

Vulnerability Description

A heap buffer overflow in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier in the SSL VPN web portal may cause the SSL VPN web service termination for logged in users due to a failure to properly handle javascript href data when proxying webpages.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2018-13383

Credits & Attribution

No credits recorded in the NVD database.

References

More from Fortinet

View All →
CVE-2025-68686
An Exposure of Sensitive Information to an Unauthorized Actor vulnerability...
Medium 5.3
CVE-2025-68649
An improper limitation of a pathname to a restricted directory...
Medium 5.4
CVE-2025-68648
A use of externally-controlled format string vulnerability in Fortinet FortiAnalyzer...
Medium 6.5
CVE-2025-68482
A improper certificate validation vulnerability in Fortinet FortiAnalyzer 7.6.0 through...
Medium 6.3
CVE-2025-67862
An Internal Asset Exposed to Unsafe Debug Access Level or...
Medium 6

Affected Vendor

Affected Software

Fortinet FortiOS and FortiProxy
Vulnerable Versions:
FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier, FortiProxy 2.0.0, 1.2.8 and earlier

Timeline

Official Publish: May 29th, 2019
Last Modified: October 21st, 2025
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.