CVE-2017-7739

Name: CVE-2017-7739
Creator: NVD / NIST
Published: 2017-11-13T14:29:00.947+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.08%

Last modified Jun 17, 2026

CVE-2017-7739 is a vulnerability of currently unknown severity. A reflected Cross-site Scripting (XSS) vulnerability in web proxy disclaimer response web pages in Fortinet FortiOS 5.6.0, 5.4.0 to 5.4.5, 5.2.0 to 5.2.11 allows an unauthenticated attacker to inject arbitrary web script or HTML in the context of the victim's browser via sending a maliciously crafted URL to the victim.. EPSS estimates a 1.08% chance of exploitation in the next 30 days.

Description

A reflected Cross-site Scripting (XSS) vulnerability in web proxy disclaimer response web pages in Fortinet FortiOS 5.6.0, 5.4.0 to 5.4.5, 5.2.0 to 5.2.11 allows an unauthenticated attacker to inject arbitrary web script or HTML in the context of the victim's browser via sending a maliciously crafted URL to the victim.

Metrics

EPSS Probability

1.08%

60.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Fortinet	Fortios	5.2.0
Fortinet	Fortios	5.2.1
Fortinet	Fortios	5.2.2
Fortinet	Fortios	5.2.3
Fortinet	Fortios	5.2.4
Fortinet	Fortios	5.2.5
Fortinet	Fortios	5.2.6
Fortinet	Fortios	5.2.7
Fortinet	Fortios	5.2.8
Fortinet	Fortios	5.2.9
Fortinet	Fortios	5.2.10
Fortinet	Fortios	5.2.11
Fortinet	Fortios	5.4.0
Fortinet	Fortios	5.4.1
Fortinet	Fortios	5.4.2
Fortinet	Fortios	5.4.3
Fortinet	Fortios	5.4.4
Fortinet	Fortios	5.4.5
Fortinet	Fortios	5.6.0

References

http://www.securityfocus.com/bid/101679Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039741Third Party Advisory, VDB Entry
https://fortiguard.com/advisory/FG-IR-17-168Issue Tracking, Vendor Advisory
http://www.securityfocus.com/bid/101679Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039741Third Party Advisory, VDB Entry
https://fortiguard.com/advisory/FG-IR-17-168Issue Tracking, Vendor Advisory

Timeline

Published: Nov 13, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7739?

How severe is CVE-2017-7739?

Severity scoring for CVE-2017-7739 is pending analysis. The EPSS model estimates a 1.08% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7739?

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-2017-7739?

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

Scan your code now

Source: NVD / NIST