What is CVE-2026-62877?

CVE-2026-62877 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Win32k Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-62877 cover?

CVE-2026-62877 covers the following CVE IDs: CVE-2026-62877. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-62877?

CVE-2026-62877 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-62877?

CVE-2026-62877 affects 4 products, including: Microsoft Office 365 for Mac; Microsoft Office LTSC for Mac 2021; Microsoft Office LTSC for Mac 2024; Microsoft Office for Android.

CVE-2026-62877HighCVSS 7.8

Windows Win32k Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

August 14, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-62877 →

📋 Description

Stack-based buffer overflow in Windows Win32K allows an authorized attacker to elevate privileges locally.

🎯 Affected products4

Microsoft Office 365 for Mac
Microsoft Office LTSC for Mac 2021
Microsoft Office LTSC for Mac 2024
Microsoft Office for Android

✅ Remediation

KBRelease Notes (Security Update) — fixed build 16.0.20430.20000 KBRelease Notes (Security Update) — fixed build 16.112.26090911

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62877
patchhttps://support.microsoft.com/en-us/microsoft-365
patchhttps://learn.microsoft.com/en-us/officeupdates/release-notes-office-for-mac