Acer Aspire BIOS vulnerability

published 2022-11-28 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-51399

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

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.

Patch / fix

fixed in 5

Acer Aspire A315-22 1.11
Acer Aspire A115-21 1.11
Acer Aspire A315-22G 1.11
Acer Extensa EX215-21 1.11
Acer Extensa EX215-21G 1.11

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-04-14)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.1	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H
NVD	3.1	8.2	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

Acer Aspire A315-22
Acer Aspire A115-21
Acer Aspire A315-22G
Acer Extensa EX215-21
Acer Extensa EX215-21G

Classification

Weakness

CWE-276 Incorrect Default Permissions

References

community.acer.com /en/kb/articles/15520-security-vulnerability-regarding-vulnerability-that-may-allow-changes-to-secure-boot-set
vendor-advisory

Sources

CVE List CVE-2022-4020
NVD CVE-2022-4020

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary