Microsoft Windows
CVE-2020-16901 — Windows Kernel Information Disclosure Vulnerability
Executive Summary
An information disclosure vulnerability exists when the Windows kernel improperly initializes objects in memory. To exploit this vulnerability, an authenticated attacker could run a specially crafted application. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system. The update addresses the vulnerability by correcting how the Windows kernel initializes objects in memory.
Overview
5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
None
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 4.5
EPSS Score
0.01455
probability of exploitation in the next 30 days
0.70737 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
4 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 Version 1909 for 32-bit Systems | 4577671 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1909 for ARM64-based Systems | 4577671 (Security Update) |
Important | Information Disclosure | Yes |
| Windows 10 Version 1909 for x64-based Systems | 4577671 (Security Update) |
Important | Information Disclosure | Yes |
| Windows Server, version 1909 (Server Core installation) | 4577671 (Security Update) |
Important | Information Disclosure | Yes |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
4577671 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
None
References
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