CVE-2019-0863
High 7.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft Windows Error Reporting (WER) Privilege Escalation Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
An elevation of privilege vulnerability exists in the way Windows Error Reporting (WER) handles files, aka 'Windows Error Reporting Elevation of Privilege Vulnerability'.
Metrics
- CVSS 3.1
-
7.8 (HIGH)
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 5% (percentile: 92) as of 2 November 2026
Affected products
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 7; microsoft: windows 8.1; microsoft: windows rt 8.1; microsoft: windows server 1803; microsoft: windows server 1903; microsoft: windows server 2008; microsoft: windows server 2012; microsoft: windows server 2016
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0863 PatchVendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0863 PatchVendor Advisory
- http://packetstormsecurity.com/files/153008/Angry-Polar-Bear-2-Microsoft-Window… Third Party AdvisoryVDB Entry
- http://packetstormsecurity.com/files/153008/Angry-Polar-Bear-2-Microsoft-Window… Third Party AdvisoryVDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019… US Government Resource