CVE-2025-21314: Windows SmartScreen Spoofing Vulnerability

Overview

Severity

Medium (CVSS 6.5)

CVSS Vector

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

Category

Spoofing

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2025-Jan

Released

2025-01-14

EPSS Score

0.30% (percentile: 53.1%)

FAQ

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? An attacker would have to send the victim a malicious file that the victim would have to execute.

Affected Products (25)

Windows

• Windows Server 2025 (Server Core installation)
• Windows Server 2025
• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• 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 11 Version 23H2 for ARM64-based Systems
• Windows 11 Version 23H2 for x64-based Systems
• Windows Server 2022, 23H2 Edition (Server Core installation)
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 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)

ESU

• Windows 11 Version 22H2 for ARM64-based Systems
• Windows 11 Version 22H2 for x64-based Systems
• Windows 10 Version 22H2 for x64-based Systems
• Windows 10 Version 22H2 for ARM64-based Systems
• Windows 10 Version 22H2 for 32-bit Systems

Security Updates (7)

• 5050009
• 5050008
• 5049983
• 5049981
• 5050021
• 5049984
• 5049993

Acknowledgments

Haifei Li with <a href="https://research.checkpoint.com/">Check Point Research</a>, Eric Lawrence with Microsoft

Revision History

• 2025-01-14: Information published.