CVE-2019-3581: McAfee Web Gateway

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

Improper input validation in the proxy component of McAfee Web Gateway 7.8.2.0 and later allows remote attackers to cause a denial of service via a crafted HTTP request parameter.

Affected products

• McAfee McAfee Web Gateway: from 7.8.2.0, before 7.8.2.5 (fixed in 7.8.2.5); from 8.0.0.0, before 8.0.2.0 (fixed in 8.0.2.0)

Published 2019-01-09. Last modified 2026-06-17.