CVE-1999-1087

high Microsoft
CVSS v3 Base Score
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS Score
9.0%
Exploitation probability in 30 days
Top 7% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Confidentiality
P
Integrity
P
Availability
P
Published: December 31, 1999 (9631 days ago)
Last Modified: April 16, 2026
Vendor: Microsoft
Source: NVD

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.

CWE

NVD-CWE-Other

Affected Products

microsoft internet explorer

References

🔗 support.microsoft.com 🔗 www.microsoft.com 🔗 www.osvdb.org 🔗 docs.microsoft.com 🔗 exchange.xforce.ibmcloud.com