CVE-2026-62885
Received Received - Intake

Heap-based Buffer Overflow in Windows Win32K

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: Microsoft Corporation

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

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
CVE-2026-62885
EUVD
EUVD-2026-56684

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows to 2026-62885 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

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Executive Summary

This is a heap-based buffer overflow vulnerability in Windows Win32K. An authorized attacker can exploit it to elevate privileges locally on an affected system.

Impact Analysis

An attacker with local access could exploit this to gain higher privileges, potentially allowing them to install programs, view or delete data, or create new accounts with full user rights.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the heap-based buffer overflow in Win32K. Monitor Microsoft's security advisories for updates and ensure all systems are updated promptly.

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