CVE-2020-1054 KEV
Patch first
On CISA KEV — known exploited in the wild, due 2022-05-03.
Description
An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.
Scoring
| CVSS | 7.0 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 54.16% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | yes — remediate by 2022-05-03 |
| Public exploit | none known |
| Published | 2020-05-21 |
| Last modified | 2026-08-19 |
CISA KEV
| Name | Microsoft Win32k Privilege Escalation Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2022-05-03 |
| Vendor / product | Microsoft / Win32k |
| Ransomware use | none reported |
Affected (17)
| Vendor | Product |
|---|---|
| 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 7 |
| microsoft | windows 8.1 |
| microsoft | windows rt 8.1 |
| microsoft | windows server 1803 |
| microsoft | windows server 1903 |
| microsoft | windows server 1909 |
| microsoft | windows server 2008 |
| microsoft | windows server 2012 |
| microsoft | windows server 2016 |
| microsoft | windows server 2019 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1054
- http://packetstormsecurity.com/files/160515/Microsoft-Windows-DrawIconEx-Local-Privilege-Escalation.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1054
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1054
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