Buffer overflow in Microsoft Windows
CVE-2020-1054
An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1143.
Vulnerability class: Buffer Overflow
EPSS: 0.528 (98.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows — versions 10 Version 1803 for 32-bit Systems, 10 Version 1803 for x64-based Systems, 10 Version 1803 for ARM64-based Systems
- Microsoft Windows_10_1507
- Microsoft Windows_10_1607
- Microsoft Windows_10_1709
- Microsoft Windows_10_1803
- Microsoft Windows_10_1809
- Microsoft Windows_10_1903
- Microsoft Windows_10_1909
- Microsoft Windows 10 Version 1903 For 32-bit Systems — versions unspecified
- Microsoft Windows 10 Version 1903 For Arm64-based Systems — versions unspecified
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
- secure@microsoft.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-1054?
- CVE-2020-1054 is a high-severity vulnerability in Microsoft Windows, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-05-21.
- How severe is CVE-2020-1054?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-1054 known to be exploited?
- Yes. CVE-2020-1054 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 60 public proof-of-concept repositories are indexed.