Executive Summary

Informations
Name CVE-2021-26356 First vendor Publication 2023-05-09
Vendor Cve Last vendor Modification 2023-05-16

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Overall CVSS Score 7.4
Base Score 7.4 Environmental Score 7.4
impact SubScore 5.2 Temporal Score 7.4
Exploitabality Sub Score 2.2
 
Attack Vector Network Attack Complexity High
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

A TOCTOU in ASP bootloader may allow an attacker to tamper with the SPI ROM following data read to memory potentially resulting in S3 data corruption and information disclosure.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26356

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

CPE : Common Platform Enumeration

TypeDescriptionCount
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 2
Os 4
Os 2
Os 2
Os 2
Os 4
Os 4
Os 4
Os 2
Os 2
Os 2
Os 2
Os 4
Os 2
Os 2
Os 2
Os 2
Os 4
Os 4
Os 4
Os 2
Os 2
Os 4
Os 3
Os 4
Os 2
Os 2
Os 4
Os 2
Os 2
Os 4
Os 4
Os 2
Os 2
Os 2
Os 4
Os 4
Os 2
Os 2
Os 4
Os 2
Os 4
Os 2
Os 2
Os 4
Os 4
Os 2
Os 4
Os 4
Os 2
Os 2
Os 2
Os 2
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 3
Os 3
Os 3
Os 1
Os 1
Os 1
Os 2
Os 2
Os 2
Os 2
Os 1
Os 1
Os 1
Os 1
Os 2
Os 2
Os 2
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1
Os 1

Sources (Detail)

Source Url
MISC https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001

Alert History

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Date Informations
2023-09-23 02:10:14
  • Multiple Updates
2023-05-22 21:27:35
  • Multiple Updates
2023-05-17 00:27:19
  • Multiple Updates
2023-05-10 00:27:15
  • First insertion