Cyber Resilience

CVE-2021-26943

HighPublic PoC

Published: 31 March 2021

Published
31 March 2021
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0287 86.6th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-26943 is a high-severity an unspecified weakness vulnerability in Asus Ux360Ca Bios. Its CVSS base score is 8.2 (High).

Operationally, ranked in the top 13.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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).

CWE(s)
NVD-CWE-noinfo

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

asus
ux360ca bios
≤ 304

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References