CVE-2026-50322

Analyzed Analyzed - Analysis Complete

Race Condition in Windows Runtime Elevates Privileges

Publication date: 2026-07-14

Last updated on: 2026-07-22

Assigner: Microsoft Corporation

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-14

Last Modified

2026-07-22

Generated

2026-08-03

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-50322

EUVD

EUVD-2026-43896

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_server_2025	to 10.0.26100.33158 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2525 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
CWE-362	The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Attack-Flow Graph

Executive Summary

CVE-2026-50322 is a race condition vulnerability in the Windows Runtime. A race condition occurs when multiple processes or threads access a shared resource without proper synchronization, leading to unpredictable behavior.

In this case, the vulnerability allows an authorized attacker with local access to exploit the improper synchronization in the Windows Runtime. This could enable the attacker to elevate their privileges on the affected system.

Impact Analysis

If exploited, this vulnerability could have the following impacts:

An attacker with local access to your system could gain elevated privileges, allowing them to perform actions they would not normally be authorized to do.
Elevated privileges could enable the attacker to install malicious software, modify system configurations, access sensitive data, or create new user accounts with administrative rights.

This could lead to further compromise of your system, data breaches, or unauthorized access to other connected systems or networks.

Compliance Impact

This vulnerability could impact compliance with common standards and regulations in the following ways:

GDPR: If the vulnerability leads to unauthorized access or disclosure of personal data, it could result in a violation of GDPR requirements for data protection and breach notification.
HIPAA: For organizations handling protected health information (PHI), exploitation of this vulnerability could lead to unauthorized access to PHI, violating HIPAA's Security Rule and Privacy Rule.
Other standards (e.g., ISO 27001, NIST): Failure to mitigate this vulnerability could result in non-compliance with requirements for access control, system integrity, and risk management.

Organizations should assess the risk posed by this vulnerability and apply necessary patches or mitigations to maintain compliance.

Mitigation Strategies

Apply the security update provided by Microsoft to address CVE-2026-50322. The update can be obtained through the Microsoft Update Guide linked in the resources.

Ensure all systems running the affected Windows Runtime are updated to the latest patched version.
Monitor the Microsoft Security Response Center (MSRC) for any additional guidance or updates related to this vulnerability.

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