CVE-2021-23885: McAfee Web Gateway

High severity, CVSS 8.8. EPSS: 1.1% chance of exploitation in the next 30 days.

Privilege escalation vulnerability in McAfee Web Gateway (MWG) prior to 9.2.8 allows an authenticated user to gain elevated privileges through the User Interface and execute commands on the appliance via incorrect improper neutralization of user input in the troubleshooting page.

Affected products

• McAfee Web Gateway: before 8.2.17 (fixed in 8.2.17); from 9.2, before 9.2.8 (fixed in 9.2.8); from 10.0, before 10.0.4 (fixed in 10.0.4)

Published 2021-02-17. Last modified 2026-06-17.