CASCACascade Atlas

Evidence dossier

CVE-2020-1054

CVE-2020-1054

72.5–89.0Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1143.

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

Apply updates per vendor instructions.

FIRST EPSS52.78%

2026-07-18 · v2026.06.15 · percentile 98.9%

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 Windows when the Windows kernel-mode driver fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1143.

CISA KEVoriginal assertion
observed_exploitation

Microsoft Win32k Privilege Escalation Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.527780000000; percentile 0.988530000000

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:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_1903:-:*:*:*:*:*:x64:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:x64:*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.