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TI-2021-08545 Aliases CVE-2021-26943GHSA-mjx5-gc25-3cxf

The UX360CA BIOS through 303 on ASUS laptops allow an attacker (with the ring 0…

Priority LOW 37Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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).

Why it matters now

EPSS 0.00937 61st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:asus:ux360ca_bios:*:*:*:*:*:*:*:*before 304VulnerableASUS
cpe:2.3:h:asus:ux360ca:-:*:*:*:*:*:*:*not specified by NVDRunning onASUS
  • cpe:2.3:o:asus:ux360ca_bios:*:*:*:*:*:*:*:* Versions before 304 Vulnerable ·ASUS
  • cpe:2.3:h:asus:ux360ca:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ASUS

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-26943
  2. 2026-10-03 Alias added: GHSA-mjx5-gc25-3cxf

References

Exploit 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences