CVE-1999-1577

medium Microsoft
CVSS v3 Base Score
5.1
AV:N/AC:H/Au:N/C:P/I:P/A:P
EPSS Score
34.9%
Exploitation probability in 30 days
Top 3% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Confidentiality
P
Integrity
P
Availability
P
Published: October 31, 1999 (9692 days ago)
Last Modified: April 16, 2026
Vendor: Microsoft
Source: NVD

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.

CWE

NVD-CWE-Other

Affected Products

microsoft internet explorer

References

🔗 www.kb.cert.org 🔗 www.securityfocus.com 🔗 www.securityfocus.com 🔗 exchange.xforce.ibmcloud.com 🔗 www.kb.cert.org