Executive Summary

CVE-2020-0963 exposes an information‑disclosure flaw in the Windows GDI component that can leak memory contents. An attacker can trick a user into opening a crafted document or visiting a malicious site, enabling extraction of sensitive data that may be leveraged for further compromise. Microsoft’s patch corrects GDI’s memory handling to prevent the leak. The vulnerability is not listed in CISA KEV.

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Authoritative CVE Metadata - CVSS Base Score: 5.5 (MEDIUM) - Published: 2020-05-21T23:15:11.337 - Last Modified: 2026-08-19T17:17:07.677

Original Description: An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage. The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in memory.

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