CVE-2009-3566

CVE-2009-3566 is a medium-severity vulnerability in Mcafee Intrushield Network Security Manager with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Description

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.

Frequently asked questions

What is CVE-2009-3566?
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.
How severe is CVE-2009-3566?
CVE-2009-3566 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-3566 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3566?
CVE-2009-3566 primarily affects Mcafee Intrushield Network Security Manager. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3566?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-3566 published?
CVE-2009-3566 was published on 2009-11-13 and last updated on 2026-06-16.

References

Affected products (3)

More vulnerabilities in Mcafee Intrushield Network Security Manager

All CVEs affecting Mcafee Intrushield Network Security Manager →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →