CVE-2026-50453

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Read in Windows USB Audio Class Driver

Publication date: 2026-07-14

Last updated on: 2026-07-22

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Windows USB Audio Class driver (usbaudio.sys) allows an unauthorized attacker to disclose information with a physical attack.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-14

Last Modified

2026-07-22

Generated

2026-08-04

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-50453

EUVD

EUVD-2026-44065

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_10_1607	to 10.0.14393.9339 (exc)
microsoft	windows_10_1607	to 10.0.14393.9339 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_server_2016	to 10.0.14393.9339 (exc)
microsoft	windows_server_2019	to 10.0.17763.9020 (exc)
microsoft	windows_server_2022	to 10.0.20348.5386 (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_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (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-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds read flaw in the Windows USB Audio Class driver (usbaudio.sys). It allows an unauthorized attacker with physical access to disclose sensitive information from the system.

Detection Guidance

This vulnerability requires a physical attack vector, so detection on a network is not applicable. For systems using the Windows USB Audio Class driver (usbaudio.sys), monitor for unusual audio device behavior or crashes. Check for updates from Microsoft to patch the driver.

Impact Analysis

An attacker with physical access could exploit this to read sensitive data from memory, potentially exposing confidential information stored on the system.

Compliance Impact

This vulnerability could lead to unauthorized disclosure of personal or sensitive data, potentially violating GDPR, HIPAA, or other privacy regulations that require protection of such information.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the usbaudio.sys driver. Monitor Microsoft's update guide for patches and disable USB audio devices if not required.

Hi! I’m here to help you understand CVE-2026-50453. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70