CVE-2019-15705

Name: CVE-2019-15705
Creator: NVD / NIST
Published: 2019-11-27T21:15:12.747+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.26%

Last modified Jun 17, 2026

CVE-2019-15705 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An Improper Input Validation vulnerability in the SSL VPN portal of FortiOS versions 6.2.1 and below, and 6.0.6 and below may allow an unauthenticated remote attacker to crash the SSL VPN service by sending a crafted POST request.. EPSS estimates a 1.26% chance of exploitation in the next 30 days.

Description

An Improper Input Validation vulnerability in the SSL VPN portal of FortiOS versions 6.2.1 and below, and 6.0.6 and below may allow an unauthenticated remote attacker to crash the SSL VPN service by sending a crafted POST request.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.26%

65.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Fortinet	Fortios	<= 6.0.6
Fortinet	Fortios	>= 6.2.0, <= 6.2.1

References

https://fortiguard.com/advisory/FG-IR-19-236Vendor Advisory
https://fortiguard.com/advisory/FG-IR-19-236Vendor Advisory

Timeline

Published: Nov 27, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-15705?

How severe is CVE-2019-15705?

CVE-2019-15705 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.26% probability of exploitation in the next 30 days.

How do I fix CVE-2019-15705?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-15705?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST