MEDIUM CISA KEV

CVE-2018-13383

CVSS v3

6.5

MEDIUM

EPSS Score

1.3%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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.

CISA Known Exploited Vulnerability

Date Added
1/10/2022
Patch Due Date
7/10/2022
Ransomware Use
Known

Technical details

Published
5/29/2019

Frequently asked questions

What is CVE-2018-13383?

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.

Is CVE-2018-13383 actively exploited?

Yes. CVE-2018-13383 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 7/10/2022.

What is the CVSS score for CVE-2018-13383?

CVE-2018-13383 has a CVSS v3 base score of 6.5 (MEDIUM severity).

Is CVE-2018-13383 affecting your environment?

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