HIGH
A remote code execution vulnerability exists when HTTP Protocol Stack (Http.sys) improperly handles objects in memory, aka "HTTP Protocol Stack Remote Code Execution Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers
Published Jun 14, 2018
8.1
HIGHCVSS 3.0
EPSS 16.39%
Description
A remote code execution vulnerability exists when HTTP Protocol Stack (Http.sys) improperly handles objects in memory, aka "HTTP Protocol Stack Remote Code Execution Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
Affected products
-
- Version 32-bit SystemsStatusaffectedConstraints-
- Version Version 1607 for 32-bit SystemsStatusaffectedConstraints-
- Version Version 1607 for x64-based SystemsStatusaffectedConstraints-
- Version Version 1703 for 32-bit SystemsStatusaffectedConstraints-
- Version Version 1703 for x64-based SystemsStatusaffectedConstraints-
- Version Version 1709 for 32-bit SystemsStatusaffectedConstraints-
- Version Version 1709 for x64-based SystemsStatusaffectedConstraints-
- Version Version 1803 for 32-bit SystemsStatusaffectedConstraints-
- Version Version 1803 for x64-based SystemsStatusaffectedConstraints-
- Version x64-based SystemsStatusaffectedConstraints-
- Version
-
- Version version 1709 (Server Core Installation)StatusaffectedConstraints-
- Version version 1803 (Server Core Installation)StatusaffectedConstraints-
- Version
-
- Version (Server Core installation)StatusaffectedConstraints-
- 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 | n/a |
| |||||||||||||||||||||||||||||||||
| Microsoft | Windows 10 Servers | n/a |
| |||||||||||||||||||||||||||||||||
| Microsoft | Windows Server 2016 | n/a |
|
OR
- n/a
- 1607
- 1703
- 1709
- 1803
- n/a
- n/a
- 1709
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.
No CVSS v3.1 score for this CVE.
8.1 HIGH NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
9.3 HIGH NVD
AV:N/AC:M/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
16.39% 0.16392
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.16392
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 (52 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 16.39% (0.16392) | 96.88th | v5 (v2026.06.15) |
| Sep 22, 2026 | 16.39% (0.16392) | 96.83th | v5 (v2026.06.15) |
| Sep 21, 2026 | 19.30% (0.19297) | 97.27th | v5 (v2026.06.15) |
| Sep 20, 2026 | 16.39% (0.16392) | 96.82th | v5 (v2026.06.15) |
| Sep 6, 2026 | 15.96% (0.15955) | 96.68th | v5 (v2026.06.15) |
| Sep 5, 2026 | 18.79% (0.18788) | 97.16th | v5 (v2026.06.15) |
| Aug 30, 2026 | 15.96% (0.15955) | 96.66th | v5 (v2026.06.15) |
| Aug 28, 2026 | 18.79% (0.18788) | 97.14th | v5 (v2026.06.15) |
| Aug 24, 2026 | 15.96% (0.15955) | 96.64th | v5 (v2026.06.15) |
| Aug 23, 2026 | 18.79% (0.18788) | 97.13th | v5 (v2026.06.15) |
| Jun 15, 2026 | 14.99% (0.14988) | 96.28th | v5 (v2026.06.15) |
| Apr 5, 2026 | 31.39% (0.31394) | 96.76th | v4 (v2025.03.14) |
| Mar 17, 2026 | 29.42% (0.29415) | 96.54th | v4 (v2025.03.14) |
| Feb 9, 2026 | 38.65% (0.38653) | 97.14th | v4 (v2025.03.14) |
| Dec 29, 2025 | 48.78% (0.48777) | 97.65th | v4 (v2025.03.14) |
| Nov 30, 2025 | 56.25% (0.56251) | 97.98th | v4 (v2025.03.14) |
| Nov 21, 2025 | 51.16% (0.51157) | 97.74th | v4 (v2025.03.14) |
| Nov 18, 2025 | 38.66% (0.38659) | 97.08th | v4 (v2025.03.14) |
| Apr 1, 2025 | 51.16% (0.51157) | 97.65th | v4 (v2025.03.14) |
| Mar 30, 2025 | 41.86% (0.41864) | 97.15th | v4 (v2025.03.14) |
| Mar 29, 2025 | 55.71% (0.55713) | 97.22th | v4 (v2025.03.14) |
| Mar 19, 2025 | 42.28% (0.42280) | 97.04th | v4 (v2025.03.14) |
| Mar 17, 2025 | 33.72% (0.33716) | 96.56th | v4 (v2025.03.14) |
| Dec 17, 2024 | 63.71% (0.63715) | 98.00th | v3 (v2023.03.01) |
| Dec 12, 2024 | 19.83% (0.19827) | 96.50th | v3 (v2023.03.01) |
| May 24, 2024 | 20.25% (0.20249) | 96.34th | v3 (v2023.03.01) |
| Apr 23, 2024 | 22.66% (0.22663) | 96.45th | v3 (v2023.03.01) |
| Mar 29, 2024 | 23.13% (0.23127) | 96.44th | v3 (v2023.03.01) |
| Feb 28, 2024 | 30.55% (0.30553) | 96.80th | v3 (v2023.03.01) |
| Feb 1, 2024 | 30.23% (0.30230) | 96.54th | v3 (v2023.03.01) |
| Dec 15, 2023 | 28.31% (0.28307) | 96.39th | v3 (v2023.03.01) |
| Nov 26, 2023 | 27.29% (0.27289) | 96.30th | v3 (v2023.03.01) |
| Nov 5, 2023 | 23.87% (0.23873) | 96.06th | v3 (v2023.03.01) |
| Oct 14, 2023 | 25.95% (0.25947) | 96.15th | v3 (v2023.03.01) |
| Sep 23, 2023 | 32.39% (0.32387) | 96.47th | v3 (v2023.03.01) |
| Jul 8, 2023 | 31.13% (0.31125) | 96.38th | v3 (v2023.03.01) |
| Jun 8, 2023 | 41.10% (0.41096) | 96.76th | v3 (v2023.03.01) |
| May 8, 2023 | 40.91% (0.40913) | 96.72th | v3 (v2023.03.01) |
| Apr 4, 2023 | 30.96% (0.30959) | 96.28th | v3 (v2023.03.01) |
| Mar 15, 2023 | 38.24% (0.38236) | 96.57th | v3 (v2023.03.01) |
| Mar 7, 2023 | 30.96% (0.30959) | 96.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 34.60% (0.34599) | 97.77th | v2 (v2022.01.01) |
| Oct 5, 2022 | 34.60% (0.34599) | 97.71th | v2 (v2022.01.01) |
| Jul 15, 2022 | 32.42% (0.32419) | 97.54th | v2 (v2022.01.01) |
| May 31, 2022 | 31.10% (0.31104) | 97.44th | v2 (v2022.01.01) |
| Apr 27, 2022 | 27.14% (0.27139) | 97.02th | v2 (v2022.01.01) |
| Mar 21, 2022 | 23.10% (0.23099) | 94.63th | v2 (v2022.01.01) |
| Feb 4, 2022 | 21.36% (0.21361) | 94.19th | v2 (v2022.01.01) |
| Feb 3, 2022 | 17.55% (0.17549) | 91.03th | v1 |
| Jan 6, 2022 | 17.55% (0.17549) | 90.92th | v1 |
| Sep 1, 2021 | 17.55% (0.17549) | 97.67th | v1 |
| Apr 14, 2021 | 17.55% (0.17549) | 0.00th | v1 |
Weaknesses (0)
No CWE recorded.
References (3)
- http://www.securityfocus.com/bid/104373 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041094 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8231 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/104373 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041094 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8231 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Jun 14, 2018
Updated Aug 5, 2024
Reserved Mar 14, 2018
Link CVE-2018-8231
CISA Vulnrichment
Updated n/a