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cvelistESETCVELIST:CVE-2022-4020
HistoryNov 28, 2022 - 1:00 p.m.

CVE-2022-4020 Acer Aspire BIOS vulnerability

2022-11-2813:00:01
CWE-276
ESET
www.cve.org
1
acer
aspire
bios
vulnerability
hqswsmidxe
dxe driver
consumer
notebook
devices
attacker
elevated privileges
uefi
secure boot
nvram
variable

CVSS3

8.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H

AI Score

8.3

Confidence

High

EPSS

0

Percentile

12.6%

Vulnerability in theΒ 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.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "modules": [
      "BIOS/firmware"
    ],
    "product": "Aspire A315-22",
    "vendor": "Acer",
    "versions": [
      {
        "lessThan": "1.11",
        "status": "affected",
        "version": "1.04",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "modules": [
      "BIOS/firmware"
    ],
    "product": "Aspire A115-21",
    "vendor": "Acer",
    "versions": [
      {
        "lessThan": "1.11",
        "status": "affected",
        "version": "1.04",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "modules": [
      "BIOS/firmware"
    ],
    "product": "Aspire A315-22G",
    "vendor": "Acer",
    "versions": [
      {
        "lessThan": "1.11",
        "status": "affected",
        "version": "1.04",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "modules": [
      "BIOS/firmware"
    ],
    "product": "Extensa EX215-21",
    "vendor": "Acer",
    "versions": [
      {
        "lessThan": "1.11",
        "status": "affected",
        "version": "1.04",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "modules": [
      "BIOS/firmware"
    ],
    "product": "Extensa EX215-21G",
    "vendor": "Acer",
    "versions": [
      {
        "lessThan": "1.11",
        "status": "affected",
        "version": "1.04",
        "versionType": "custom"
      }
    ]
  }
]

CVSS3

8.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H

AI Score

8.3

Confidence

High

EPSS

0

Percentile

12.6%

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