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CVE-2022-4020

Acer Aspire BIOS vulnerability

HIGH
8.2
CVSS Score
Published: November 28, 2022 at 01:00 PM UTC
Updated: June 17, 2026 at 05:19 AM UTC
10 products affected across 1 vendorExtensa Ex215-21Extensa Ex215-21GAspire A315-22G

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Severity
HIGH8.2
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Aspire A115-21 Firmware· Acer
60%
1.04 ≤ v < 1.111.04
Affected range stops below 1.11, so it looks safe — our inference, not a vendor statement
acer-aspire-a115-21 (same device)
Aspire A315-22 Firmware· Acer
60%
1.04 ≤ v < 1.111.04
Affected range stops below 1.11, so it looks safe — our inference, not a vendor statement
acer-aspire-a315-22 (same device)
Aspire A315-22g Firmware· Acer
60%
1.04 ≤ v < 1.111.04
Affected range stops below 1.11, so it looks safe — our inference, not a vendor statement
acer-aspire-a315-22g (same device)
Extensa Ex215-21 Firmware· Acer
60%
1.04 ≤ v < 1.111.04
Affected range stops below 1.11, so it looks safe — our inference, not a vendor statement
acer-extensa-ex215-21 (same device)
Extensa Ex215-21g Firmware· Acer
60%
1.04 ≤ v < 1.111.04
Affected range stops below 1.11, so it looks safe — our inference, not a vendor statement
acer-extensa-ex215-21g (same device)
Aspire A115-21· Acerdevice
80%
All versions
Aspire A315-22· Acerdevice
80%
All versions
Aspire A315-22G· Acerdevice
80%
All versions
Extensa Ex215-21· Acerdevice
80%
All versions
Extensa Ex215-21G· Acerdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://community.acer.com/en/kb/articles/15520-security-vulnerability-regarding-vulnerability-that-may-allow-changes-to-secure-boot-settings

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-276

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