VULNERABILITY INTELLIGENCE

CVE-1999-1577

CVSS score5.1 MEDIUM
EPSS probability19.49%
CISA KEVNot currently listed
Published1999-10-31
Last modified2026-06-16
CVSS vectorAV:N/AC:H/Au:N/C:P/I:P/A:P

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.

Primary references