CASCACascade Atlas

Evidence dossier

CVE-2020-1027

CVE-2020-1027

62.2–78.7Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Apr 15, 2020
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS4.45%

2026-07-18 · v2026.06.15 · percentile 90.3%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

microsoftoriginal assertion
container

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.

CISA KEVoriginal assertion
observed_exploitation

Microsoft Windows Kernel Privilege Escalation Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.044470000000; percentile 0.903450000000

Applicability

Cited product scope

Trace impact →
MicrosoftWindows
[{"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"}]unknown
MicrosoftWindows 10 Version 1903 for 32-bit Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1903 for ARM64-based Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1903 for x64-based Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1909 for 32-bit Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1909 for ARM64-based Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows 10 Version 1909 for x64-based Systems
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows Server
[{"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)"}]unknown
MicrosoftWindows Server, version 1903 (Server Core installation)
[{"status": "affected", "version": "unspecified"}]unknown
MicrosoftWindows Server, version 1909 (Server Core installation)
[{"status": "affected", "version": "unspecified"}]unknown
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:arm64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:x86:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_1803:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*supported

Assessments

CVSS by origin

7.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2
nvd@nist.govCVSS 2.0 · role PrimaryAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.