CVE-2019-0803

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2019-0803 is an elevation of privilege vulnerability in the Windows Win32k component that arises when the driver fails to properly handle objects in memory. The flaw affects supported Windows releases and carries a CVSS 3.1 base score of 7.8, reflecting local attack vector, low complexity, and no user interaction requirements.

A local attacker with existing low-privileged access can exploit the issue to corrupt memory objects, thereby obtaining full administrative privileges on the affected system and gaining the ability to read, write, or delete arbitrary data.

Microsoft’s security advisory and the CISA Known Exploited Vulnerabilities catalog both reference the flaw, indicating that official patches are available through standard Windows Update channels and that organizations should apply them promptly to prevent exploitation.

The vulnerability appears in public exploit repositories and is tracked by CISA as actively used in the wild, underscoring the need for rapid remediation on any remaining unpatched endpoints.