HIGHCVSS v3.1 7.8Actively exploited · CISA KEV since 2021-11-03Vulnerability
CVE-2021-28310
Microsoft Windows Win32k contains an unspecified vulnerability that allows for privilege escalation.
Properties
- Euvd product
- Windows 10 Version 1803, Windows 10 Version 1809, Windows Server 2019, Windows Server, version 1909 (Server Core installation), Windows Server version 20H2, Windows Server 2019 (Server Core installation), Windows 10 Version 20H2, Windows 10 Version 1909, Windows Server version 2004, Windows 10 Version 2004
- Vulnerability name
- Microsoft Win32k Privilege Escalation Vulnerability
- First seen
- 2025-10-21T23:25:49+00:00
- Cvss score
- 7.8
- Epss score
- 0.08398
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2021-11-17
- 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 (12)
AFFECTS_PRODUCT (9)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
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