CVE-2019-3639: McAfee Web Gateway

High severity, CVSS 7.1. EPSS: 1.2% chance of exploitation in the next 30 days.

Clickjack vulnerability in Adminstrator web console in McAfee Web Gateway (MWG) 7.8.2.x prior to 7.8.2.12 allows remote attackers to conduct clickjacking attacks via a crafted web page that contains an iframe via does not send an X-Frame-Options HTTP header.

Affected products

• McAfee Web Gateway: from 7.8.2.0, before 7.8.2.12 (fixed in 7.8.2.12)

Published 2019-08-14. Last modified 2026-06-17.