Heap-based Buffer Overflow in Windows Work Folders

Publication date: 2026-09-08

Last updated on: 2026-09-24

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-24

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-80075

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_10_21h2	to 10.0.19044.7725 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7725 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7725 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7725 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7725 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7725 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9445 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9445 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9445 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9445 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2954 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2954 (exc)

Helpful Resources

Exploitability

CWE

KEV

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().

Attack-Flow Graph

Executive Summary

This is a heap-based buffer overflow vulnerability in Windows Work Folders. It allows an authorized attacker with local access to elevate their privileges on the system.

Impact Analysis

An attacker could exploit this to gain higher-level permissions on your system, 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 for Windows Work Folders as soon as they become available to patch the heap-based buffer overflow vulnerability.

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