CVE-2021-26943

Severity Score

8.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0 privilege) to overwrite nearly arbitrary physical memory locations, including SMRAM, and execute arbitrary code in the SMM (issue 3 of 3).

El BIOS UX360CA versiones hasta 303 en las computadoras portátiles ASUS permite a un atacante (con el privilegio ring 0) sobrescribir ubicaciones de la memoria física casi arbitrarias, incluida la SMRAM, y ejecutar código arbitrario en la SMM (problema 3 de 3).

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-02-09 CVE Reserved
2021-03-31 CVE Published
2024-08-03 CVE Updated
2024-08-03 EPSS Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://www.asus.com/support/FAQ/1045541	2024-08-03
https://www.youtube.com/watch?v=1H3AfaVyeuk	2024-08-03

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Asus Search vendor "Asus"	Ux360ca Bios Search vendor "Asus" for product "Ux360ca Bios"	< 304 Search vendor "Asus" for product "Ux360ca Bios" and version " < 304"	-	Affected	in	Asus Search vendor "Asus"	Ux360ca Search vendor "Asus" for product "Ux360ca"	-	-	Safe