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…
- 7.5HighCVSS base score
- 71.7%Exploitation in 30 daysEPSS · top 0.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 10Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list 2 Metasploit modules and 8 Exploit-DB entries for it.
Show the exploits10
Metasploit modules2 modules
- HTML Help Workshop 4.74 (hhp Project File) Buffer Overflow (Metasploit module) (opens in a new tab)
exploit/windows/fileformat/hhw_hhp_compiledfile_bofRank gooddisclosed 6 Feb 2006
- HTML Help Workshop 4.74 (hhp Project File) Buffer Overflow (Metasploit module) (opens in a new tab)
exploit/windows/fileformat/hhw_hhp_contentfile_bofRank gooddisclosed 6 Feb 2006
Exploit-DB8 entries
- Microsoft HTML Help Workshop 4.74 - '.hhp' Cotent Buffer Overflow (Metasploit) (2) (Exploit-DB entry) (opens in a new tab)
EDB-ID 16648local, windowspublished 25 Sept 2010Verified
- Microsoft HTML Help Workshop 4.74 - '.hhp' compiled Buffer Overflow (Metasploit) (4) (Exploit-DB entry) (opens in a new tab)
EDB-ID 16683local, windowspublished 25 Sept 2010Verified
- Microsoft HTML Help Workshop 4.74 - '.hhp' Local Buffer Overflow (1) (Exploit-DB entry) (opens in a new tab)
EDB-ID 10321local, windowspublished 5 Dec 2009Verified
- Microsoft HTML Workshop 4.74 - Universal Buffer Overflow (Exploit-DB entry) (opens in a new tab)
EDB-ID 7727local, windowspublished 12 Jan 2009Verified
- Microsoft HTML Help Workshop - '.hhp' Local Buffer Overflow (3) (Exploit-DB entry) (opens in a new tab)
EDB-ID 1495local, windowspublished 14 Feb 2006Verified
- Microsoft HTML Help Workshop - '.hhp' Local Buffer Overflow (2) (Exploit-DB entry) (opens in a new tab)
EDB-ID 1490local, windowspublished 11 Feb 2006Verified
- Microsoft HTML Help Workshop - '.hhp' Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 1488dos, windowspublished 10 Feb 2006Verified
- Microsoft HTML Help Workshop - '.hhp' Local Buffer Overflow (1) (Exploit-DB entry) (opens in a new tab)
EDB-ID 1470local, windowspublished 6 Feb 2006Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
Published
- 19 years later
· 19 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 71.7% · top 0.6% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
7
- 18740 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 22941 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 1015585 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- mshtmlhelp-workshop-hhp-bo(24481) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- http://users.pandora.be/bratax/advisories/b008.html (opens in a new tab)x_refsource_MISCx_transferred
- VU#124460 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- ADV-2006-0446 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2006-0571 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2006-0564)Record last updated .