CVE-2020-16938 — Windows Kernel Information Disclosure Vulnerability
Executive Summary
An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The vulnerability would not allow an attacker to execute code or to elevate user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. The update addresses the vulnerability by correcting how the Windows kernel handles objects in memory.
Overview
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
EPSS Score
Affected Products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 Version 2004 for 32-bit Systems | 4579311 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 2004 for ARM64-based Systems | 4579311 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 2004 for x64-based Systems | 4579311 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server, version 2004 (Server Core installation) | 4579311 (Security Update) |
Important | Information Disclosure | Yes |
Patches
| Article | Type | Restart |
|---|---|---|
4579311 |
Security Update | Yes |
Exploits & PoC
1 public PoCUnverified third-party code
Public proof-of-concept repositories aggregated from PoC-in-GitHub. They are not reviewed and may be incomplete, non-functional, or malicious — inspect the code before running anything.
| Repository | Stars | Published | Description |
|---|---|---|---|
| ioncodes/CVE-2020-16938 | 192 | 2020-10-21 | Bypassing NTFS permissions to read any files as unprivileged user. |
Detection Rules
Acknowledgments
Jonas Lykkegård