November 3, 2021 · Applied Cybernetics Group
CVE-2019-0803 — Microsoft Win32k
Microsoft Win32k Privilege Escalation Vulnerability
- Added to KEV
2021-11-03- Federal due date
2022-05-03- Vendor
- Microsoft
- Product
- Win32k
- EPSS
- 99.5th percentile (score 0.888, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2019-0803
CISA short description
Microsoft Win32k contains an unspecified vulnerability due to it failing to properly handle objects in memory causing privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.
Required action
Apply updates per vendor instructions.