MEDIUM
Microsoft IIS Server Denial of Service Vulnerability
Published Jun 12, 2019
4.4
MEDIUMCVSS 3.1
EPSS 3.04%
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 products
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- Version 10.0.10240.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.14393.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version 10.0.17763.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 6.1.0StatusaffectedConstraints<publication
- Version
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- Version 6.1.0StatusaffectedConstraints<publication
- Version
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- Version 6.3.0StatusaffectedConstraints<publication
- Version
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- Version 6.0.6003.0StatusaffectedConstraints<publication
- Version
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- Version 6.1.7601.0StatusaffectedConstraints<publication
- Version
- Vendor Microsoft Product Windows Server 2008 R2 Service Pack 1 (Server Core installation) Defaultn/a
- Version 6.1.7601.0StatusaffectedConstraints<publication
- Version
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- Version 6.1.0StatusaffectedConstraints<publication
- Version
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- Version 6.0.0StatusaffectedConstraints<publication
- Version 6.0.6003.0StatusaffectedConstraints<publication
- Version
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- Version 6.0.6003.0StatusaffectedConstraints<publication
- Version
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- Version 6.2.9200.0StatusaffectedConstraints<publication
- Version
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- Version 6.2.9200.0StatusaffectedConstraints<publication
- Version
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- Version 6.3.9600.0StatusaffectedConstraints<publication
- Version
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- Version 6.3.9600.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.14393.0StatusaffectedConstraints<publication
- Version
-
- Version 10.0.14393.0StatusaffectedConstraints<publication
- Version
-
- Version 10.0.17763.0StatusaffectedConstraints<publication
- Version
-
- Version 10.0.17763.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
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- Version 10.0.0StatusaffectedConstraints<publication
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Windows 10 Version 1507 | n/a |
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| Microsoft | Windows 10 Version 1607 | n/a |
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| Microsoft | Windows 10 Version 1703 | n/a |
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| Microsoft | Windows 10 Version 1709 | n/a |
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| Microsoft | Windows 10 Version 1709 for 32-bit Systems | n/a |
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| Microsoft | Windows 10 Version 1803 | n/a |
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| Microsoft | Windows 10 Version 1809 | n/a |
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| Microsoft | Windows 10 Version 1903 for 32-bit Systems | n/a |
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| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | n/a |
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| Microsoft | Windows 10 Version 1903 for x64-based Systems | n/a |
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| Microsoft | Windows 7 | n/a |
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| Microsoft | Windows 7 Service Pack 1 | n/a |
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| Microsoft | Windows 8.1 | n/a |
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| Microsoft | Windows Server 2008 Service Pack 2 | n/a |
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| Microsoft | Windows Server 2008 R2 Service Pack 1 | n/a |
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| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | n/a |
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| Microsoft | Windows Server 2008 R2 Systems Service Pack 1 | n/a |
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| Microsoft | Windows Server 2008 Service Pack 2 | n/a |
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| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | n/a |
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| Microsoft | Windows Server 2012 | n/a |
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| Microsoft | Windows Server 2012 (Server Core installation) | n/a |
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| Microsoft | Windows Server 2012 R2 | n/a |
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| Microsoft | Windows Server 2012 R2 (Server Core installation) | n/a |
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| Microsoft | Windows Server 2016 | n/a |
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| Microsoft | Windows Server 2016 (Server Core installation) | n/a |
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| Microsoft | Windows Server 2019 | n/a |
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| Microsoft | Windows Server 2019 (Server Core installation) | n/a |
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| Microsoft | Windows Server, version 1803 (Server Core Installation) | n/a |
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| Microsoft | Windows Server, version 1903 (Server Core installation) | n/a |
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OR
- n/a
- 1607
- 1703
- 1709
- 1803
- 1809
- 1903
- n/a
- n/a
- n/a
- n/a
- r2
- n/a
- r2
- n/a
- 1803
- 1903
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
4.4 MEDIUM CVE.org
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
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact Low
Availability Impact Low
Exploit Maturity Proof of Concept
1 other source (NVD) ▾
4.4 MEDIUM NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact Low
Availability Impact Low
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.04% 0.03041
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03041
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (41 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.04% (0.03041) | 87.06th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.04% (0.03041) | 85.76th | v5 (v2026.06.15) |
| Mar 4, 2026 | 2.84% (0.02839) | 85.95th | v4 (v2025.03.14) |
| Mar 1, 2026 | 4.37% (0.04370) | 88.80th | v4 (v2025.03.14) |
| Feb 4, 2026 | 2.84% (0.02839) | 85.85th | v4 (v2025.03.14) |
| Feb 1, 2026 | 4.37% (0.04370) | 88.73th | v4 (v2025.03.14) |
| Jan 4, 2026 | 2.84% (0.02839) | 85.78th | v4 (v2025.03.14) |
| Jan 1, 2026 | 4.37% (0.04370) | 88.67th | v4 (v2025.03.14) |
| Dec 4, 2025 | 2.84% (0.02839) | 85.74th | v4 (v2025.03.14) |
| Dec 1, 2025 | 4.37% (0.04370) | 88.59th | v4 (v2025.03.14) |
| Nov 4, 2025 | 2.84% (0.02839) | 85.69th | v4 (v2025.03.14) |
| Nov 1, 2025 | 4.37% (0.04370) | 88.50th | v4 (v2025.03.14) |
| Oct 4, 2025 | 2.84% (0.02839) | 85.69th | v4 (v2025.03.14) |
| Oct 1, 2025 | 4.37% (0.04370) | 88.54th | v4 (v2025.03.14) |
| Sep 4, 2025 | 2.84% (0.02839) | 85.69th | v4 (v2025.03.14) |
| Sep 1, 2025 | 4.37% (0.04370) | 88.60th | v4 (v2025.03.14) |
| Aug 4, 2025 | 2.84% (0.02839) | 85.68th | v4 (v2025.03.14) |
| Aug 1, 2025 | 4.37% (0.04370) | 88.61th | v4 (v2025.03.14) |
| Jul 4, 2025 | 2.84% (0.02839) | 85.62th | v4 (v2025.03.14) |
| Jul 1, 2025 | 4.37% (0.04370) | 88.52th | v4 (v2025.03.14) |
| Jun 4, 2025 | 2.84% (0.02839) | 85.53th | v4 (v2025.03.14) |
| Jun 1, 2025 | 4.37% (0.04370) | 88.44th | v4 (v2025.03.14) |
| May 21, 2025 | 2.84% (0.02839) | 85.50th | v4 (v2025.03.14) |
| May 10, 2025 | 5.70% (0.05695) | 89.90th | v4 (v2025.03.14) |
| May 4, 2025 | 7.53% (0.07529) | 91.30th | v4 (v2025.03.14) |
| May 1, 2025 | 11.21% (0.11215) | 93.14th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.53% (0.07529) | 90.97th | v4 (v2025.03.14) |
| Mar 29, 2025 | 10.34% (0.10343) | 88.56th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.71% (0.07711) | 91.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.19% (0.00193) | 58.16th | v3 (v2023.03.01) |
| Oct 25, 2023 | 0.20% (0.00196) | 57.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.19% (0.00193) | 55.23th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.44% (0.03442) | 84.71th | v2 (v2022.01.01) |
| Dec 7, 2022 | 3.44% (0.03442) | 84.28th | v2 (v2022.01.01) |
| May 21, 2022 | 2.87% (0.02868) | 81.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.63% (0.02632) | 80.45th | v2 (v2022.01.01) |
| Feb 4, 2022 | 23.96% (0.23965) | 95.14th | v2 (v2022.01.01) |
| Feb 3, 2022 | 21.08% (0.21078) | 94.43th | v1 |
| Jan 6, 2022 | 21.08% (0.21078) | 94.37th | v1 |
| Sep 1, 2021 | 5.62% (0.05618) | 88.96th | v1 |
| Apr 14, 2021 | 5.62% (0.05618) | 0.00th | v1 |
Weaknesses (1)
References (2)
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0941 vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0941 PatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0941 | vendor-advisory | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0941 | PatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Jun 12, 2019
Updated May 20, 2025
Reserved Nov 26, 2018
Link CVE-2019-0941
CISA Vulnrichment
Updated n/a