CVE-2006-0564

CVE-2006-0564 is a high-severity vulnerability in Microsoft Html Help with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 71% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Stack-based buffer overflow in Microsoft HTML Help Workshop 4.74.8702.0, and possibly earlier versions, and as included in the Microsoft HTML Help 1.4 SDK, allows context-dependent attackers to execute arbitrary code via a .hhp file with a long Contents file field.

Frequently asked questions

What is CVE-2006-0564?
Stack-based buffer overflow in Microsoft HTML Help Workshop 4.74.8702.0, and possibly earlier versions, and as included in the Microsoft HTML Help 1.4 SDK, allows context-dependent attackers to execute arbitrary code via a .hhp file with a long Contents file field.
How severe is CVE-2006-0564?
CVE-2006-0564 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-0564 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 71% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0564?
CVE-2006-0564 primarily affects Microsoft Html Help. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-0564?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2006-0564 published?
CVE-2006-0564 was published on 2006-02-06 and last updated on 2026-06-16.

References

Affected products (2)