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redhatcveRedhat.comRH:CVE-2021-26316
HistoryJan 25, 2023 - 11:35 a.m.

CVE-2021-26316

2023-01-2511:35:45
redhat.com
access.redhat.com
29
bios communication buffer
smm execution
amd advisory

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0

Percentile

12.7%

A flaw was found in hw. Failure to validate the BIOS’s communication buffer and communication service may allow an attacker to tamper with the buffer, resulting in potential System Management Mode (SMM) arbitrary code execution.

Mitigation

Please contact AMD for more updates on this flaw.

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0

Percentile

12.7%

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