CVE-2019-3638: McAfee Web Gateway

Critical severity, CVSS 9.6. EPSS: 1.9% chance of exploitation in the next 30 days.

Reflected Cross Site Scripting vulnerability in Administrators web console in McAfee Web Gateway (MWG) 7.8.x prior to 7.8.2.13 allows remote attackers to collect sensitive information or execute commands with the MWG administrator's credentials via tricking the administrator to click on a carefully constructed malicious link.

Affected products

• McAfee Web Gateway: from 7.8.2, before 7.8.2.13 (fixed in 7.8.2.13); from 8.0.0, before 8.2.0 (fixed in 8.2.0)

Published 2019-09-12. Last modified 2026-06-17.