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Vulnerability record · CVE-2001-0724 · published 14 November 2001

CVE-2001-0724: Microsoft internet explorer vulnerability

Microsoft · Internet Explorer

Internet Explorer 5.5 allows remote attackers to bypass security restrictions via malformed URLs that contain dotless IP addresses, which causes Internet Explorer to process the page in the Intranet Zone, which may have fewer security restrictions, aka the "Zone Spoofing Vulnerability variant" of CVE-2001-0664.

7.5 CVSS 2.0 High EPSS 12% · top 3.9%
7.5CVSS 2.0 base score
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Internet Explorer 5.5 allows remote attackers to bypass security restrictions via malformed URLs that contain dotless IP addresses, which causes Internet Explorer to process the page in the Intranet Zone, which may have fewer security restrictions, aka the "Zone Spoofing Vulnerability variant" of CVE-2001-0664.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.osvdb.org/5556
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-055
https://exchange.xforce.ibmcloud.com/vulnerabilities/8471
http://www.osvdb.org/5556
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-055
https://exchange.xforce.ibmcloud.com/vulnerabilities/8471

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2001-0724), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.