Buffer overflow in Winhlp32.exe allows remote attackers to execute arbitrary code via an HTML document that calls the HTML Help ActiveX control (HHCtrl.ocx) with a long pathname in the Item parameter
Published Apr 2, 2003
7.5
HIGHCVSS 2.0
EPSS 26.17%
Description
Buffer overflow in Winhlp32.exe allows remote attackers to execute arbitrary code via an HTML document that calls the HTML Help ActiveX control (HHCtrl.ocx) with a long pathname in the Item parameter.
Affected products
No data.
Configuration 1
- n/a
Configuration 2
- n/a
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (24 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 26.17% (0.26175) | 97.94th | v5 (v2026.06.15) |
| Jul 20, 2026 | 26.17% (0.26175) | 97.77th | v5 (v2026.06.15) |
| Jun 20, 2026 | 44.40% (0.44400) | 98.60th | v5 (v2026.06.15) |
| Jun 15, 2026 | 26.17% (0.26175) | 97.72th | v5 (v2026.06.15) |
| Dec 28, 2025 | 64.56% (0.64565) | 98.38th | v4 (v2025.03.14) |
| Dec 27, 2025 | 39.23% (0.39233) | 97.16th | v4 (v2025.03.14) |
| Nov 21, 2025 | 64.56% (0.64565) | 98.36th | v4 (v2025.03.14) |
| Oct 28, 2025 | 61.45% (0.61453) | 98.22th | v4 (v2025.03.14) |
| Oct 27, 2025 | 35.66% (0.35662) | 96.90th | v4 (v2025.03.14) |
| Oct 23, 2025 | 61.45% (0.61453) | 98.22th | v4 (v2025.03.14) |
| Oct 1, 2025 | 72.50% (0.72495) | 98.72th | v4 (v2025.03.14) |
| Jul 26, 2025 | 35.18% (0.35181) | 96.86th | v4 (v2025.03.14) |
| Jun 25, 2025 | 34.13% (0.34128) | 96.76th | v4 (v2025.03.14) |
| Mar 30, 2025 | 35.66% (0.35662) | 96.74th | v4 (v2025.03.14) |
| Mar 29, 2025 | 40.29% (0.40291) | 96.01th | v4 (v2025.03.14) |
| Mar 19, 2025 | 35.66% (0.35662) | 96.58th | v4 (v2025.03.14) |
| Mar 17, 2025 | 41.19% (0.41187) | 97.07th | v4 (v2025.03.14) |
| Dec 12, 2024 | 18.32% (0.18318) | 96.38th | v3 (v2023.03.01) |
| Feb 8, 2024 | 18.32% (0.18318) | 96.01th | v3 (v2023.03.01) |
| Nov 8, 2023 | 62.41% (0.62412) | 97.50th | v3 (v2023.03.01) |
| Apr 17, 2023 | 89.82% (0.89822) | 98.20th | v3 (v2023.03.01) |
| Mar 7, 2023 | 91.47% (0.91473) | 98.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 44.63% (0.44626) | 98.37th | v2 (v2022.01.01) |
| Feb 4, 2022 | 44.63% (0.44626) | 97.73th | v2 (v2022.01.01) |
No CWE recorded.
References (5)
- http://marc.info/?l=bugtraq&m=102822806329440&w=2 mailing-listx_refsource_BUGTRAQ
- http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3Bq293338 vendor-advisoryx_refsource_MSKB
- http://www.iss.net/security_center/static/9746.php vdb-entryx_refsource_XF
- http://www.osvdb.org/2991 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/4857 vdb-entryx_refsource_BID
| Link | Providers | Tags |
|---|---|---|
| http://marc.info/?l=bugtraq&m=102822806329440&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3Bq293338 | vendor-advisoryx_refsource_MSKB | |
| http://www.iss.net/security_center/static/9746.php | vdb-entryx_refsource_XF | |
| http://www.osvdb.org/2991 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/4857 | vdb-entryx_refsource_BID |
Change history (0)
No recorded changes yet.