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Fencer Vulns
medium 5.0

CVE-2001-1186 json

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…

published 2001-12-11 24 y ago modified 2026-06-16 4 mo ago also EUVD-2001-1167

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
34.7%
EPSS 34.7% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

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.

Timeline

  1. First public exploit (EDB-21177)
  2. Published

Exploit prediction

34.67% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-21177 Microsoft IIS 5.0 - False Content-Length Field Denial of Service dos, 2001-12-11
  • securityfocus.com http://www.securityfocus.com/archive/1/244892 referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/3667 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.