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CVE-2002-0693
Buffer overflow in the HTML Help ActiveX Control (hhctrl.ocx) in Microsoft Windows 98, 98 Second Edition, Millennium Edition, NT 4.0, NT…
High7.5EPSS 31.3%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Buffer overflow in the HTML Help ActiveX Control (hhctrl.ocx) in Microsoft Windows 98, 98 Second Edition, Millennium Edition, NT 4.0, NT 4.0 Terminal Server Edition, Windows 2000, and Windows XP allows remote attackers to execute code via (1) a long parameter to the Alink function, or (2) script containing a long argument to the showHelp function.
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)
- 31.3% · top 1.7% of all CVEs (2 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (7)
- oval:org.mitre.oval:def:374 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 5874 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- MS02-055 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- 20021003 Buffer Overflow in IE/Outlook HTML Help (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20021010 prover of concept code of windows help overflow (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- win-html-help-bo(10253) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 20021009 Thor Larholm security advisory TL#004 (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)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .