CVE-2021-26943
HIGH
8.2
CVSS Score
Published: March 31, 2021 at 07:26 PM UTC
Updated: June 17, 2026 at 03:44 AM UTC
2 products affected across 1 vendorUX360CA BIOSUx360Ca
Using N/A by N/A?
Get instant alerts when new vulnerabilities affect N/A - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.2
Exploit prediction
EPSS 0.9%
Description
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).
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 304
Affected range stops below 304, so it looks safe — our inference, not a vendor statement
asus-ux360ca (same device)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_CONFIRMExploitVendor Advisory
Source: [email protected]
https://www.asus.com/support/FAQ/1045541/x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://www.youtube.com/watch?v=1H3AfaVyeukCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card