CVE-2022-4020

Acer Aspire BIOS vulnerability

Severity Score

8.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Una vulnerabilidad en el controlador HQSwSmiDxe DXE en algunos dispositivos portátiles Acer de consumo puede permitir que un atacante con privilegios elevados modifique la configuración de arranque seguro UEFI modificando una variable NVRAM.

*Credits: Martin Smolár @ ESET

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-11-16 CVE Reserved
2022-11-28 CVE Published
2024-06-20 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-276: Incorrect Default Permissions

CAPEC

CAPEC-176: Configuration/Environment Manipulation

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://community.acer.com/en/kb/articles/15520-security-vulnerability-regarding-vulnerability-that-may-allow-changes-to-secure-boot-settings	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Acer Search vendor "Acer"	Aspire A315-22g Firmware Search vendor "Acer" for product "Aspire A315-22g Firmware"	-	-	Affected	in	Acer Search vendor "Acer"	Aspire A315-22g Search vendor "Acer" for product "Aspire A315-22g"	-	-	Safe
Acer Search vendor "Acer"	Aspire A115-21 Firmware Search vendor "Acer" for product "Aspire A115-21 Firmware"	-	-	Affected	in	Acer Search vendor "Acer"	Aspire A115-21 Search vendor "Acer" for product "Aspire A115-21"	-	-	Safe
Acer Search vendor "Acer"	Aspire A315-22 Firmware Search vendor "Acer" for product "Aspire A315-22 Firmware"	-	-	Affected	in	Acer Search vendor "Acer"	Aspire A315-22 Search vendor "Acer" for product "Aspire A315-22"	-	-	Safe
Acer Search vendor "Acer"	Extensa Ex215-21 Firmware Search vendor "Acer" for product "Extensa Ex215-21 Firmware"	-	-	Affected	in	Acer Search vendor "Acer"	Extensa Ex215-21 Search vendor "Acer" for product "Extensa Ex215-21"	-	-	Safe
Acer Search vendor "Acer"	Extensa Ex215-21g Firmware Search vendor "Acer" for product "Extensa Ex215-21g Firmware"	-	-	Affected	in	Acer Search vendor "Acer"	Extensa Ex215-21g Search vendor "Acer" for product "Extensa Ex215-21g"	-	-	Safe