Vulnerability in Acer Aspire A115-21
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 an NVRAM variable.
EPSS: 0.002 (15.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H.
Affected products
- Acer Aspire A115-21 — versions 1.04
- Acer Aspire_a115-21
- Acer Aspire_a115-21_firmware
- Acer Aspire A315-22 — versions 1.04
- Acer Aspire_a315-22
- Acer Aspire_a315-22_firmware
- Acer Aspire A315-22g — versions 1.04
- Acer Aspire_a315-22g
- Acer Aspire_a315-22g_firmware
- Acer Extensa Ex215-21 — versions 1.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@eset.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2022-4020?
- CVE-2022-4020 is a high-severity vulnerability in Acer Aspire A115-21, classified under Incorrect Default Permissions. CVSS score: 8.1/10. Published 2022-11-28.
- How severe is CVE-2022-4020?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2022-4020 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.