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.
Published 2020-05-21 23:15:12
Updated 2022-04-28 19:30:33
View at NVD,   CVE.org
Vulnerability category: Memory CorruptionGain privilege

CVE-2020-1054 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Microsoft Win32k Privilege Escalation Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
Microsoft Win32k contains a privilege escalation vulnerability when the Windows kernel-mode driver fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode.
Added on 2021-11-03 Action due date 2022-05-03

Exploit prediction scoring system (EPSS) score for CVE-2020-1054

0.34%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 71 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2020-1054

  • Microsoft Windows DrawIconEx OOB Write Local Privilege Elevation
    Disclosure Date: 2020-02-20
    First seen: 2020-12-15
    exploit/windows/local/cve_2020_1054_drawiconex_lpe
    This module exploits CVE-2020-1054, an out of bounds write reachable from DrawIconEx within win32k. The out of bounds write can be used to overwrite the pvbits of a SURFOBJ. By utilizing this vulnerability to execute controlled writes to kernel memory, an att

CVSS scores for CVE-2020-1054

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.2
HIGH AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0
NIST
7.8
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
NIST

CWE ids for CVE-2020-1054

  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-1054

Products affected by CVE-2020-1054

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