Windows Subsystem for Linux Information Disclosure Vulnerability

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Summary

CVECVE-2020-1075
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-05-21 23:15:13 UTC
Updated2026-08-19 17:17:13 UTC
DescriptionAn information disclosure vulnerability exists when Windows Subsystem for Linux improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system. A attacker could exploit this vulnerability by running a specially crafted application. The update addresses the vulnerability by correcting how Windows Subsystem for Linux handles objects in memory.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.014870000 probability, percentile 0.719710000 (date 2026-08-19)

Problem Types: NVD-CWE-noinfo | Information Disclosure

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
3.1CNACVSS5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
2.0[email protected]Primary2.1AV:L/AC:L/Au:N/C:P/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:L/AC:L/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows 10 1803 All All All
Operating System Microsoft Windows 10 1809 All All All
Operating System Microsoft Windows 10 1903 All All All
Operating System Microsoft Windows 10 1909 All All All
Operating System Microsoft Windows Server 2016 1709 All All All
Operating System Microsoft Windows Server 2016 1803 All All All
Operating System Microsoft Windows Server 2016 1909 All All All
Operating System Microsoft Windows Server 2019 - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microsoft Windows 10 Version 1803 affected 10.0.0 publication custom 32-bit Systems, ARM64-based Systems, x64-based Systems
CNA Microsoft Windows 10 Version 1809 affected 10.0.17763.0 publication custom 32-bit Systems, x64-based Systems
CNA Microsoft Windows 10 Version 1809 affected 10.0.0 publication custom ARM64-based Systems
CNA Microsoft Windows 10 Version 1903 For 32-bit Systems affected 10.0.0 publication custom Not specified
CNA Microsoft Windows 10 Version 1903 For ARM64-based Systems affected 10.0.0 publication custom Not specified
CNA Microsoft Windows 10 Version 1903 For X64-based Systems affected 10.0.0 publication custom Not specified
CNA Microsoft Windows 10 Version 1909 affected 10.0.0 publication custom 32-bit Systems, ARM64-based Systems, x64-based Systems
CNA Microsoft Windows Server 2019 affected 10.0.17763.0 publication custom x64-based Systems
CNA Microsoft Windows Server 2019 Server Core Installation affected 10.0.17763.0 publication custom x64-based Systems
CNA Microsoft Windows Server Version 1803 Server Core Installation affected 10.0.0 publication custom x64-based Systems
CNA Microsoft Windows Server Version 1903 Server Core Installation affected 10.0.0 publication custom x64-based Systems
CNA Microsoft Windows Server Version 1909 Server Core Installation affected 10.0.0 publication custom x64-based Systems

References

ReferenceSourceLinkTags
msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1075 [email protected] msrc.microsoft.com
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1075 af854a3a-2127-422b-91ae-364da2661108 portal.msrc.microsoft.com Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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