CVE-2020-1256

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

<p>An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system.</p> <p>There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage.</p> <p>The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in memory.</p>

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1803>= 10.0.0, < publication
MicrosoftWindows 10 Version 1809>= 10.0.0, < publication
MicrosoftWindows Server 2019>= 10.0.0, < publication
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.0, < publication
MicrosoftWindows 10 Version 1709 for 32-bit Systems>= 10.0.0, < publication
MicrosoftWindows 10 Version 1709>= 10.0.0, < publication
MicrosoftWindows 10 Version 1903 for 32-bit Systems>= 10.0.0, < publication
MicrosoftWindows 10 Version 1903 for x64-based Systems>= 10.0.0, < publication
MicrosoftWindows 10 Version 1903 for ARM64-based Systems>= 10.0.0, < publication
MicrosoftWindows Server, version 1903 (Server Core installation)>= 10.0.0, < publication
MicrosoftWindows 10 Version 2004>= 10.0.0, < publication
MicrosoftWindows Server version 2004>= 10.0.0, < publication
MicrosoftWindows 10 Version 1507>= 10.0.0, < publication
MicrosoftWindows 10 Version 1607>= 10.0.0, < publication
MicrosoftWindows Server 2016>= 10.0.0, < publication
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.0, < publication
MicrosoftWindows 7>= 6.1.0, < publication
MicrosoftWindows 7 Service Pack 1>= 6.1.0, < publication
MicrosoftWindows 8.1>= 6.3.0, < publication
MicrosoftWindows Server 2008 R2 Service Pack 1>= 6.1.0, < publication
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)>= 6.0.0, < publication
MicrosoftWindows Server 2012>= 6.2.0, < publication
MicrosoftWindows Server 2012 (Server Core installation)>= 6.2.0, < publication
MicrosoftWindows Server 2012 R2>= 6.3.0, < publication
MicrosoftWindows Server 2012 R2 (Server Core installation)>= 6.3.0, < publication

References

Timeline

Published
Sep 11, 2020
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2020-1256: Medium severity, CVSS 5.5 | Vulnix