CVE-2007-0427
Stack-based buffer overflow in Microsoft Help Workshop 4.03.0002 allows user-assisted remote attackers to execute arbitrary code via a…
- 9.3HighCVSS base score
- 31.4%Exploitation in 30 daysEPSS · top 1.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 2Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Stack-based buffer overflow in Microsoft Help Workshop 4.03.0002 allows user-assisted remote attackers to execute arbitrary code via a help project (.HPJ) file with a long HLP field in the OPTIONS section.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list 2 Exploit-DB entries for it.
Show the exploits2
Exploit-DB2 entries
- Microsoft Help Workshop 4.03.0002 - '.HPJ' Local Buffer Overflow (Exploit-DB entry) (opens in a new tab)
EDB-ID 3159local, windowspublished 19 Jan 2007Verified
- Microsoft Help Workshop 4.03.0002 - '.cnt' Local Buffer Overflow (Exploit-DB entry) (opens in a new tab)
EDB-ID 3149local, windowspublished 17 Jan 2007Verified
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
- 1 day later
· 1 day later
Published
- 18 years later
· 18 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 | High9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 31.4% · top 1.7% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 9.3.
Affected products
n/a
- affected n/a
References
6
- 22135 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 2177 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- 31899 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 23862 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://www.anspi.pl/~porkythepig/visualization/hpj-x01.cpp (opens in a new tab)x_refsource_MISCx_transferred
- 20070119 Help project files (.HPJ) buffer overflow vulnerability in Microsoft Help Workshop (opens in a new tab)mailing-listx_refsource_BUGTRAQx_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-2007-0427 (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-2007-0427)Record last updated .