CVE-2020-1027
Microsoft Windows Kernel Privilege Escalation Vulnerability - [Actively Exploited]
Description
An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory, aka 'Windows Kernel Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-0913, CVE-2020-1000, CVE-2020-1003.
INFO
Published Date :
April 15, 2020, 3:15 p.m.
Last Modified :
June 17, 2026, 3 a.m.
Remotely Exploit :
No
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory. An attacker who successfully exploited the vulnerability could execute code with elevated permissions.
Apply updates per vendor instructions.
Unknown
https://nvd.nist.gov/vuln/detail/CVE-2020-1027
Affected Products
The following products are affected by CVE-2020-1027
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Apply the appropriate security or cumulative update for your operating system.
- Reboot the system if prompted.
Public PoC/Exploit Available at Github
CVE-2020-1027 has a 3 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-1027.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/168068/Windows-sxs-CNodeFactory-XMLParser_Element_doc_assembly_assemblyIdentity-Heap-Buffer-Overflow.html | Exploit Third Party Advisory VDB Entry |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1027 | Patch Vendor Advisory |
| http://packetstormsecurity.com/files/168068/Windows-sxs-CNodeFactory-XMLParser_Element_doc_assembly_assemblyIdentity-Heap-Buffer-Overflow.html | Exploit Third Party Advisory VDB Entry |
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1027 | Patch Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1027 | US Government Resource |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-1027 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-1027
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
An automated repo to track Nuclei template scanning capabilities against the CISA KEV.
cisa-kev nuclei scanning vulnerabilities cisa
Makefile Python Shell
NtCreateUserProcess with CsrClientCallServer for mainstream Windows x64 version
C++
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
cisa-kev vulnerability 0day cisa exploits
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-1027 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-1027 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Microsoft', 'product': 'Windows', 'versions': [{'status': 'affected', 'version': '10 Version 1803 for 32-bit Systems'}, {'status': 'affected', 'version': '10 Version 1803 for x64-based Systems'}, {'status': 'affected', 'version': '10 Version 1803 for ARM64-based Systems'}, {'status': 'affected', 'version': '10 Version 1809 for 32-bit Systems'}, {'status': 'affected', 'version': '10 Version 1809 for x64-based Systems'}, {'status': 'affected', 'version': '10 Version 1809 for ARM64-based Systems'}, {'status': 'affected', 'version': '10 Version 1709 for 32-bit Systems'}, {'status': 'affected', 'version': '10 Version 1709 for x64-based Systems'}, {'status': 'affected', 'version': '10 Version 1709 for ARM64-based Systems'}, {'status': 'affected', 'version': '10 for 32-bit Systems'}, {'status': 'affected', 'version': '10 for x64-based Systems'}, {'status': 'affected', 'version': '10 Version 1607 for 32-bit Systems'}, {'status': 'affected', 'version': '10 Version 1607 for x64-based Systems'}, {'status': 'affected', 'version': '7 for 32-bit Systems Service Pack 1'}, {'status': 'affected', 'version': '7 for x64-based Systems Service Pack 1'}, {'status': 'affected', 'version': '8.1 for 32-bit systems'}, {'status': 'affected', 'version': '8.1 for x64-based systems'}, {'status': 'affected', 'version': 'RT 8.1'}]}, {'vendor': 'Microsoft', 'product': 'Windows Server', 'versions': [{'status': 'affected', 'version': 'version 1803 (Core Installation)'}, {'status': 'affected', 'version': '2019'}, {'status': 'affected', 'version': '2019 (Core installation)'}, {'status': 'affected', 'version': '2016'}, {'status': 'affected', 'version': '2016 (Core installation)'}, {'status': 'affected', 'version': '2008 for 32-bit Systems Service Pack 2'}, {'status': 'affected', 'version': '2008 for 32-bit Systems Service Pack 2 (Core installation)'}, {'status': 'affected', 'version': '2008 for Itanium-Based Systems Service Pack 2'}, {'status': 'affected', 'version': '2008 for x64-based Systems Service Pack 2'}, {'status': 'affected', 'version': '2008 for x64-based Systems Service Pack 2 (Core installation)'}, {'status': 'affected', 'version': '2008 R2 for Itanium-Based Systems Service Pack 1'}, {'status': 'affected', 'version': '2008 R2 for x64-based Systems Service Pack 1'}, {'status': 'affected', 'version': '2008 R2 for x64-based Systems Service Pack 1 (Core installation)'}, {'status': 'affected', 'version': '2012'}, {'status': 'affected', 'version': '2012 (Core installation)'}, {'status': 'affected', 'version': '2012 R2'}, {'status': 'affected', 'version': '2012 R2 (Core installation)'}]}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 1909 for 32-bit Systems', 'versions': [{'status': 'affected', 'version': 'unspecified'}]}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 1909 for x64-based Systems', 'versions': [{'status': 'affected', 'version': 'unspecified'}]}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 1909 for ARM64-based Systems', 'versions': [{'status': 'affected', 'version': 'unspecified'}]}, {'vendor': 'Microsoft', 'product': 'Windows Server, version 1909 (Server Core installation)', 'versions': [{'status': 'affected', 'version': 'unspecified'}]}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 1903 for 32-bit Systems', 'versions': [{'status': 'affected', 'version': 'unspecified'}]}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 1903 for x64-based Systems', 'versions': [{'status': 'affected', 'version': 'unspecified'}]}, {'vendor': 'Microsoft', 'product': 'Windows 10 Version 1903 for ARM64-based Systems', 'versions': [{'status': 'affected', 'version': 'unspecified'}]}, {'vendor': 'Microsoft', 'product': 'Windows Server, version 1903 (Server Core installation)', 'versions': [{'status': 'affected', 'version': 'unspecified'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2020-1027', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'active'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2025-02-07T15:14:06.659846Z'} -
Modified Analysis by [email protected]
Oct. 29, 2025
Action Type Old Value New Value Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1027 Types: US Government Resource -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 22, 2025
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1027 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Removed Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1027 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1027 -
Modified Analysis by [email protected]
Apr. 08, 2025
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:* *cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_server_1803:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:* *cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:* *cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:* -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 07, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/168068/Windows-sxs-CNodeFactory-XMLParser_Element_doc_assembly_assemblyIdentity-Heap-Buffer-Overflow.html Added Reference https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1027 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Sep. 30, 2022
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/168068/Windows-sxs-CNodeFactory-XMLParser_Element_doc_assembly_assemblyIdentity-Heap-Buffer-Overflow.html No Types Assigned http://packetstormsecurity.com/files/168068/Windows-sxs-CNodeFactory-XMLParser_Element_doc_assembly_assemblyIdentity-Heap-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry -
CVE Modified by [email protected]
Aug. 12, 2022
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/168068/Windows-sxs-CNodeFactory-XMLParser_Element_doc_assembly_assemblyIdentity-Heap-Buffer-Overflow.html [No Types Assigned] -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE NVD-CWE-noinfo CWE-787 -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE CWE-269 NVD-CWE-noinfo -
Initial Analysis by [email protected]
Apr. 21, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1027 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1027 Patch, Vendor Advisory Added CWE NIST CWE-269 Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:* *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*