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Fencer Intel
high 7.5

CVE-2019-0941 json

Microsoft IIS Server Denial of Service Vulnerability

published 7y ago modified 4mo ago also EUVD-2019-1676

cvss
7.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.0%
EPSS 3.0% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

A denial of service exists in Microsoft IIS Server when the optional request filtering feature improperly handles requests. An attacker who successfully exploited this vulnerability could perform a temporary denial of service against pages configured to use request filtering. To exploit this vulnerability, an attacker could send a specially crafted request to a page utilizing request filtering. The update addresses the vulnerability by changing the way certain requests are processed by the filter.

Patch / fix

Is CVE-2019-0941 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

3.04% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C
CNA 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CNA 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • Microsoft Windows 10 Version 1903 for 32-bit Systems
  • Microsoft Windows 10 Version 1803
  • Microsoft Windows Server, version 1903 (Server Core installation)
  • Microsoft Windows 7 Service Pack 1
  • Microsoft Windows Server 2008 R2 Service Pack 1
  • Microsoft Windows 10 Version 1903 for x64-based Systems
  • Microsoft Windows 10 Version 1809
  • Microsoft Windows Server 2019
  • Microsoft Windows 8.1
  • Microsoft Windows Server 2012 (Server Core installation)
  • Microsoft Windows 10 Version 1903 for ARM64-based Systems
  • Microsoft Windows 10 Version 1507
  • Microsoft Windows 10 Version 1709
  • Microsoft Windows 10 Version 1703
  • Microsoft Windows Server, version 1803 (Server Core Installation)
  • Microsoft Windows Server 2019 (Server Core installation)
  • Microsoft Windows Server 2016 (Server Core installation)
  • Microsoft Windows 10 Version 1607
  • Microsoft Windows 7
  • Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
  • Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows 10 Version 1709 for 32-bit Systems
  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2008 Service Pack 2
  • Microsoft Windows Server 2012 R2 (Server Core installation)
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2008 R2 Systems Service Pack 1
  • Microsoft Windows Server 2008 Service Pack 2

Classification

Weakness
  • CWE-19 Data Processing Errors

References

Sources

Fencer Intel 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.