CVE-2021-1703: Windows Event Logging Service Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

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

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2021-Jan

Released

2021-01-12

Last Updated

2021-01-14

EPSS Score

0.29% (percentile: 52.2%)

Affected Products (7)

Windows

• Windows 10 Version 20H2 for 32-bit Systems
• Windows 10 Version 20H2 for ARM64-based Systems
• Windows Server, version 20H2 (Server Core Installation)
• Windows 10 Version 2004 for 32-bit Systems
• Windows 10 Version 2004 for ARM64-based Systems
• Windows 10 Version 2004 for x64-based Systems
• Windows Server, version 2004 (Server Core installation)

Security Updates (1)

• 4598242

Acknowledgments

Ronen Haber (Palo Alto Networks)

Revision History

• 2021-01-12: Information published.
• 2021-01-14: Added acknowledgements. This is an informational change only.