CVE-2019-0863

An elevation of privilege vulnerability exists in the way Windows Error Reporting (WER) handles files, aka 'Windows Error Reporting Elevation of Privilege Vulnerability'.

Score

CVSS 3.1 7.8 High

Status

Analyzed - secure@microsoft.com

Published

2019-05-16

Last modified

2025-10-21

Known exploited (CISA KEV)

since 2021-11-03, action due 2022-05-03: Apply updates per vendor instructions.

Affected products

• Version 1903 Server Core Installation (Microsoft)
• Windows (Microsoft)
• Windows 10 1507 (Microsoft)
• Windows 10 1607 (Microsoft)
• Windows 10 1703 (Microsoft)
• Windows 10 1709 (Microsoft)
• Windows 10 1803 (Microsoft)
• Windows 10 1809 (Microsoft)
• Windows 10 1903 (Microsoft)
• Windows 10 Version 1903 For 32-bit Systems (Microsoft)
• Windows 10 Version 1903 For Arm64-based Systems (Microsoft)
• Windows 10 Version 1903 For X64-based Systems (Microsoft)
• Windows 7 (Microsoft)
• Windows 8.1 (Microsoft)
• Windows Rt 8.1 (Microsoft)
• Windows Server (Microsoft)
• Windows Server 1803 (Microsoft)
• Windows Server 1903 (Microsoft)
• Windows Server 2008 (Microsoft)
• Windows Server 2012 (Microsoft)
• Windows Server 2016 (Microsoft)
• Windows Server 2019 (Microsoft)

References

• http://packetstormsecurity.com/files/153008/Angry-Polar-Bear-2-Microsoft-Windows-Error-Reporting-Local-Privilege-Escala…
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0863
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0863