CVE-2022-4020

HIGH

Acer Notebook - Privilege Escalation

Title source: llm

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.

References (1)

Core 1

Core References

Vendor Advisory

https://community.acer.com/en/kb/articles/15520-security-vulnerability-regarding-vulnerability-that-may-allow-changes-to-secure-boot-settings

Scores

CVSS v3 8.1

EPSS 0.0024

EPSS Percentile 14.8%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-276

Status published

Products (5)

acer/aspire_a115-21_firmware

acer/aspire_a315-22_firmware

acer/aspire_a315-22g_firmware

acer/extensa_ex215-21_firmware

acer/extensa_ex215-21g_firmware

Published Nov 28, 2022

Tracked Since Feb 18, 2026