CVE-2001-0724

Internet Explorer vulnerability

CVSS

7.5

EPSS

12.3%

EPSS pct

96th

Exploited

No known

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.

Affected vendor

Microsoft

Affected product

Internet Explorer

CVSS vector

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

Published

2001-11-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 12.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2001-0724

Confirm whether Microsoft Internet Explorer is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2001-0724.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2001-0724

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2001-0724 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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