HIGHCVSS v3.1 7.8Actively exploited · CISA KEV since 2021-11-03Vulnerability

CVE-2019-0863

Microsoft Windows Error Reporting (WER) contains a privilege escalation vulnerability due to the way it handles files, allowing for code execution in kernel mode.

Properties

Euvd product
Windows, Windows 10 Version 1903 for ARM64-based Systems, Windows 10 Version 1903 for 32-bit Systems, Windows Server, Windows 10 Version 1903 for x64-based Systems, Windows Server, version 1903 (Server Core installation)
Vulnerability name
Microsoft Windows Error Reporting (WER) Privilege Escalation Vulnerability
First seen
2025-10-21T23:45:36+00:00
Cvss score
7.8
Epss score
0.05207
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-05-03
Euvd assigner
microsoft
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2021-11-03T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2021-11-03
Score
7.8
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Microsoft
Cvss vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
7.8

Related Entities (31 · showing 22)

AFFECTS_PRODUCT (29 · showing 20)

→[Product]cpe:2.3:o:microsoft:windows_server_1803:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x86:*
→[Product]cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:arm64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1709:-:*:*:*:*:*:arm64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_10_1903:-:*:*:*:*:*:arm64:*
→[Product]cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Microsoft Windows Error Reporting (WER) Privilege Escalation Vulnerability

INVOLVES (1)

←[Signal]kev_added · 2021-11-03

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CVE-2019-0863 (CVSS v3.1 7.8) — Ninja Signal Threat Intelligence | Ninja Signal