CVE-1999-1577 EXPLOIT
5.1
MEDIUM · CVSS 2.0 · EPSS 19.5% (pctl 97)
Patch early
A public exploit exists.
Description
Buffer overflow in HHOpen ActiveX control (hhopen.ocx) 1.0.0.1 for Internet Explorer 4.01 and 5 allows remote attackers to execute arbitrary commands via long arguments to the OpenHelp method.
Scoring
| CVSS | 5.1 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| EPSS | 19.49% — more likely to be exploited than 97% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 1999-10-31 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| microsoft | internet explorer |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft Internet Explorer 5.0/4.0.1 - hhopen OLE Control Buffer Overflow | 1999-09-27 |
References
- http://www.kb.cert.org/vuls/id/29795
- http://www.securityfocus.com/archive/1/28719
- http://www.securityfocus.com/bid/669
- https://exchange.xforce.ibmcloud.com/vulnerabilities/3314
- http://www.kb.cert.org/vuls/id/29795
- http://www.securityfocus.com/archive/1/28719
- http://www.securityfocus.com/bid/669
- https://exchange.xforce.ibmcloud.com/vulnerabilities/3314
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