CVE-2022-34704: Windows Defender Credential Guard Information Disclosure Vulnerability

Overview

Severity

Medium (CVSS 4.7)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Category

Information Disclosure

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2022-Aug

Released

2022-08-09

Last Updated

2022-12-13

EPSS Score

3.28% (percentile: 87.2%)

FAQ

What type of information could be disclosed by this vulnerability? An attacker who successfully exploited this vulnerability could recover plaintext from TLS-protected data.

Affected Products (24)

Windows

• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows 10 Version 1809 for ARM64-based Systems
• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows 10 Version 21H1 for x64-based Systems
• Windows 10 Version 21H1 for ARM64-based Systems
• Windows 10 Version 21H1 for 32-bit Systems
• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• Windows 10 Version 20H2 for 32-bit Systems
• Windows 10 Version 20H2 for ARM64-based Systems
• Windows Server, version 20H2 (Server Core Installation)
• Windows 11 version 21H2 for x64-based Systems
• Windows 11 version 21H2 for ARM64-based Systems
• Windows 10 Version 21H2 for 32-bit Systems
• Windows 10 Version 21H2 for ARM64-based Systems
• Windows 10 Version 21H2 for x64-based Systems
• Windows 10 for 32-bit Systems
• Windows 10 for x64-based Systems
• Windows 10 Version 1607 for 32-bit Systems
• Windows 10 Version 1607 for x64-based Systems
• Windows Server 2016
• Windows Server 2016 (Server Core installation)

Security Updates (6)

• 5016623
• 5016616
• 5016627
• 5016629
• 5016639
• 5016622

Acknowledgments

James Forshaw of <a href="https://googleprojectzero.blogspot.com/">Google Project Zero</a>

Revision History

• 2022-08-09: Information published.
• 2022-12-13: Updated one or more CVSS scores for the affected products. This is an informational change only.