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CVE-2026-50387

Last refreshed2026-10-15

Status: UPDATED  |  Advisory ID: CVE-2026-50387

Key Details

CVECVE-2026-50387
CVSS Score / Version
7.8 (High) / CVSS v3.1
Updated2026-10-14
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Prose
attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products
see table below
Classified as
CWE-121 (Stack-based Buffer Overflow)

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
MicrosoftWindows 11 (version 24H2)
MicrosoftWindows 11 (version 25H2)
MicrosoftWindows 11 (version 26H1)
MicrosoftWindows Server 2025
MicrosoftWindows 10 (version 1607)
MicrosoftWindows 10 (version 1809)
MicrosoftWindows 10 (version 21H2)
MicrosoftWindows 10 (version 22H2)
MicrosoftWindows Server 2012
MicrosoftWindows Server 2016
MicrosoftWindows Server 2019
MicrosoftWindows Server 2022
MicrosoftWindows Server 2012 R2
MicrosoftMicrosoft Office 365 for Mac
MicrosoftMicrosoft Office LTSC for Mac 2021
MicrosoftMicrosoft Office LTSC for Mac 2024
MicrosoftMicrosoft 365 Copilot
MicrosoftMicrosoft Office for Android
SubsystemsOT Supporting Infrastructure
SectorsAll Sectors

What to Know

Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.

What to Do

Monitor Microsoft's web page for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-50387
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-50387
Vendor advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50387

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