CVE-2001-0664

medium

Description

Internet Explorer 5.5 and 5.01 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."

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/7258

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-051

http://www.securityfocus.com/bid/3420

http://www.osvdb.org/1971

http://morph3us.org/blog/?p=31

http://marc.info/?l=bugtraq&m=100281551611595&w=2

Details

Source: Mitre, NVD

Published: 2001-10-30

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 4.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.13805