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CVE-2019-0941

Microsoft IIS Server Denial of Service Vulnerability

MEDIUM
4.4
CVSS Score
Published: June 12, 2019 at 01:49 PM UTC
Updated: June 17, 2026 at 02:09 AM UTC
17 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows Server 2012

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Severity
MEDIUM4.4
Exploit prediction
EPSS 3%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Windows 10· Microsoft
95%
10.0.0 ≤ v < publication160717031709180318091903
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 10 1507· Microsoft
95%
10.0.10240.0 ≤ v < publication10.0.10240.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 10 1607· Microsoft
95%
10.0.14393.0 ≤ v < publication10.0.14393.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 10 1803· Microsoft
95%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 10 1809· Microsoft
95%
10.0.0 ≤ v < publication10.0.17763.0 ≤ v < publication10.0.010.0.17763.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 7· Microsoft
95%
6.1.0 ≤ v < publication6.1.0sp1
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows 8-1· Microsoft
95%
6.3.0 ≤ v < publication6.3.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows Rt 8-1· Microsoft
95%
All versions
Windows Server 1803· Microsoft
95%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
Windows Server 1903· Microsoft
95%
10.0.0 ≤ v < publication10.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0941
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0941

CVSS

4.4MEDIUMmicrosoft
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-19

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