CVE Feed

    Dashboard / CVE / CVE-1999-1087

    CVE-1999-1087

    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.

    Published:Dec 31, 1999
    Last Modified:Apr 16, 2026
    EPS:Mar 9, 2002
    EPSS Score:0.09023
    CVSS Score:7.5

    Affected Products

    Vendor
    Microsoft
    Product
    Internet Explorer

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2025-59295 (CVSS 8.8) — Heap-based buffer overflow in Internet Explorer allows an unauthorized attacker to execute code over a network…
    CVE-2021-35240 (CVSS 6.5) — A security researcher stored XSS via a Help Server setting. This affects customers using Internet Explorer, be…
    CVE-2021-26419 (CVSS 7.5) — Scripting Engine Memory Corruption Vulnerability…
    CVE-2021-27085 (CVSS 8.8) — Internet Explorer Remote Code Execution Vulnerability…
    CVE-2021-26411 (CVSS 8.8) — Internet Explorer Memory Corruption Vulnerability…
    CVE-2020-17058 (CVSS 7.5) — Microsoft Browser Memory Corruption Vulnerability…
    CVE-2020-17053 (CVSS 7.5) — Internet Explorer Memory Corruption Vulnerability…
    CVE-2020-17052 (CVSS 7.5) — Scripting Engine Memory Corruption Vulnerability…
    CVE-2020-1506 (CVSS 6.1) — <p>An elevation of privilege vulnerability exists in the way that the Wininit.dll handles objects in memory. A…
    CVE-2020-1012 (CVSS 8.8) — <p>An elevation of privilege vulnerability exists in the way that the Wininit.dll handles objects in memory. A…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High