CVE-2020-1027 Microsoft Windows Kernel Privilege Escalation
An attacker can exploit a memory handling flaw in the Windows Kernel to elevate privileges on affected systems.
- Exploited in the wild
- Since 23 May 2022
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-1027?
CVE-2020-1027 is a high-severity memory corruption vulnerability in Microsoft Windows 10 1507, published on 15 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory, aka 'Windows Kernel Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-0913, CVE-2020-1000, CVE-2020-1003.
Weakness: CWE-787
Which versions are affected by CVE-2020-1027?
It affects 17 products.
Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1709, Microsoft Windows 10 1803, Microsoft Windows 10 1809, Microsoft Windows 10 1903 and 11 more.
How do I fix CVE-2020-1027?
No fix has been published for CVE-2020-1027 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 13 Jun 2022.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-1027 being exploited?
Yes. Attackers have exploited CVE-2020-1027 in the wild since at least 23 May 2022.
Other vulnerabilities in Microsoft Windows 10 1507
- CVE-2017-8543 Microsoft Windows Search Remote Code Execution
- CVE-2025-33053 Microsoft Windows External Control of File Name or Path
- CVE-2025-33073 Microsoft Windows SMB Client Improper Access Control
- CVE-2024-49039 Microsoft Windows Task Scheduler Privilege Escalation
- CVE-2024-43461 Microsoft Windows MSHTML Platform Spoofing
Sources
Also known as GHSA-4425-fxh6-87fr.