CVE-2001-1186

Internet Information Services vulnerability

CVSS

5.0

EPSS

31.4%

EPSS pct

98th

Exploited

No known

Microsoft IIS 5.0 allows remote attackers to cause a denial of service via an HTTP request with a content-length value that is larger than the size of the request, which prevents IIS from timing out the connection.

Affected vendor

Microsoft

Affected product

Internet Information Services

CVSS vector

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

Published

2001-12-11

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 availability.

Its EPSS score of 31.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2001-1186

Confirm whether Microsoft Internet Information Services is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2001-1186.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2001-1186

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2001-1186 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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