Back to Database
Status published
High
CVE-2022-4020
Acer Aspire BIOS vulnerability
Vulnerability Description
Vulnerability in the HQSwSmiDxe DXE driver on some consumer Acer Notebook devices may allow an attacker with elevated privileges to modify UEFI Secure Boot settings by modifying an NVRAM variable.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2022-4020
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Martin Smolár @ ESET
More from Acer
View All →CVE-2025-5491
Acer ControlCenter - Remote Code Execution
High
8.7
CVE-2025-14305
Acer｜ListCheck.exe - Local Privilege Escalation
High
8.5
CVE-2024-8105
Insecure Platform Key (PK) used in UEFI system firmware signature
Unknown
0
CVE-2021-47826
Acer Backup Manager Module 3.0.0.99 - 'IScheduleSvc.exe' Unquoted Service Path
High
8.5
CVE-2021-47825
Acer Updater Service 1.2.3500.0 - 'UpdaterService.exe' Unquoted Service Path
High
8.5
Affected Vendor
Acer
View all reports →Affected Software
Aspire A315-22, Aspire A115-21, Aspire A315-22G, Extensa EX215-21, Extensa EX215-21G
Vulnerable Versions:
1.04
Timeline
Official Publish:
November 28th, 2022
Last Modified:
April 14th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H