CVE-1999-1577 describes a buffer overflow vulnerability in the HHOpen ActiveX control (hhopen.ocx) version 1.0.0.1, affecting Microsoft Internet Explorer 4.01 and 5. This flaw allows remote attackers to execute arbitrary commands by providing excessively long arguments to the OpenHelp method. Rated Medium severity with a CVSS score of 5.1, it requires high attack complexity but can lead to partial compromise of confidentiality, integrity, and availability. While not listed in CISA's KEV catalog and lacking Metasploit or Nuclei modules, exploit code is publicly available via ExploitDB, though there is no evidence of active exploitation or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.0.1CPE matchmatch criteria | cpe:2.3:a:microsoft:internet_explorer:4.0.1:*:*:*:*:*:*:* | ||
5.0CPE matchmatch criteria | cpe:2.3:a:microsoft:internet_explorer:5.0:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:H/Au:N/C:P/I:P/A:P
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The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.