CVE-2009-3566: McAfee Intrushield Network Security Manager

Medium severity, CVSS 4.3. EPSS: 4% chance of exploitation in the next 30 days.

McAfee IntruShield Network Security Manager (NSM) before 5.1.11.8.1 does not include the HTTPOnly flag in the Set-Cookie header for the session identifier, which allows remote attackers to hijack a session by leveraging a cross-site scripting (XSS) vulnerability.

Affected products

• McAfee Intrushield Network Security Manager: up to and including 5.1.7.74; version 5.1.7.7 only; version 5.1.7.73 only

Published 2009-11-13. Last modified 2026-06-16.