CVE-1999-1087

HighCVSS 7.5/10Last modified Jun 16, 2026

Description

Internet Explorer 4 treats a 32-bit number ("dotless IP address") in the a URL as the hostname instead of an IP address, which causes IE to apply Local Intranet Zone settings to the resulting web page, allowing remote malicious web servers to conduct unauthorized activities by using URLs that contain the dotless IP address for their server.

Metrics

CVSS 2.0 7.5/10AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected software

No affected versions have been published.

Timeline

Published
Dec 31, 1999
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-1999-1087: High severity, CVSS 7.5 | Vulnix