High severity · published Nov 28, 2022
CVE-2022-4020
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…
8.2
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
Aspire A115-21 Firmware · Acer
All versions, or not specified · source: NVD
AA
Aspire A315-22 Firmware · Acer
All versions, or not specified · source: NVD
AA
Aspire A315-22g Firmware · Acer
All versions, or not specified · source: NVD
EE
Extensa Ex215-21 Firmware · Acer
All versions, or not specified · source: NVD
EE
Extensa Ex215-21g Firmware · Acer
All versions, or not specified · source: NVD