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[email protected]CVE-2020-26186

HistoryJan 08, 2021 - 7:15 p.m.

CVE-2020-26186

2021-01-0819:15:14

CWE-642

CWE-668

[email protected]

web.nvd.nist.gov

dell

inspiron 5675

bios

cve-2020-26186

uefi

runtimeservices

vulnerability

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

6.8 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.8 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.0%

JSON

Dell Inspiron 5675 BIOS versions prior to 1.4.1 contain a UEFI BIOS RuntimeServices overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the RuntimeServices structure to execute arbitrary code in System Management Mode (SMM).

Affected configurations

NVD

Node

dellinspiron_5675Match-

AND

dellinspiron_5675_firmwareRange<1.4.1

CPENameOperatorVersion
dell:inspiron_5675_firmwaredell inspiron 5675 firmwarelt1.4.1

CPE	Name	Operator	Version
dell:inspiron_5675_firmware	dell inspiron 5675 firmware	lt	1.4.1

CNA Affected

[
  {
    "product": "CPG BIOS",
    "vendor": "Dell",
    "versions": [
      {
        "lessThan": "1.4.1",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

www.dell.com/support/kbdoc/en-us/000180645/dsa-2020-247-dell-client-platform-security-update-for-uefi-bios-runtimeservices-overwrite-vulnerability

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

6.8 Medium

CVSS3

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

6.8 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

35.0%

JSON

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