ASUS releases BIOS updates to its Intel-powered notebooks to address Intel Microarchitectural Data Sampling (MDS) vulnerabilities, also known as ZombieLoad, RIDL, and Fallout. Intel states that selected 8th and 9th Generation Intel Core processors, as well as the 2nd Generation Intel Xeon Scalable processor family, are not vulnerable to MDS. If you are using one of these processors, no further action is necessary. However, processors older than the 9th and 8th generation Intel Core processors have proven vulnerabilities wherein Intel even suggests to disable hyperthreading to minimize impact. Read the Expected Performance Impacts Of MDS Vulnerability Mitigation here.

Watch ZombieLord in Action on video below.


ASUS is working closely with Intel to provide a solution in a forthcoming BIOS update. ASUS recommends owners of affected products update both the BIOS and operating system as soon as these mitigations are available. Check out the first wave of BIOS updates on selected ASUS notebooks below:

System Model Name - Target Release Date
X540UA - 2019, WW24
X430FN - 2019, WW24
X530FN - 2019, WW24
X512FA - 2019, WW24
UX433FN - 2019, WW24
UX433FA - 2019, WW24
UX533FD - 2019, WW24
UX333FA - 2019, WW24
P1440UA - 2019, WW24
P1440FB - 2019, WW24
G531GW - 2019, WW23
G531GV - 2019, WW23
G531GU - 2019, WW23
G531GT - 2019, WW23
G531GD - 2019, WW23
GX502GW - 2019, WW23
GX502GV - 2019, WW23
GX502GWH - 2019, WW23
GU502GW - 2019, WW23
GU502GV - 2019, WW23
GU502GU - 2019, WW23
G703GXR - 2019, WW23
GX531GXR - 2019, WW23
GX531GWR - 2019, WW23
GX531GXH - 2019, WW23
GL12CS - 2019, WW24
GL12CX - 2019, WW24
GL12CX-C - 2019, WW24
GX701GW - 2019, WW24
GX701GXR - 2019, WW24
GX701GWR - 2019, WW24
GX701GVR - 2019, WW24
GX701GXH - 2019, WW24
G21CX - 2019, WW24
G21CN-D - 2019, WW24
GM501GM - 2019, WW25
GU501GM - 2019, WW25
GL504GM - 2019, WW25
GX531GM - 2019, WW25
GL704GW - 2019, WW25
GL704GV - 2019, WW25
GL504GW - 2019, WW25
GL504GV - 2019, WW25
G21CN - 2019, WW26
GL10CS - 2019, WW26
FX505GT - 2019, WW26
FX504GD - 2019, WW26
FX504GE - 2019, WW26
FX504GM - 2019, WW26
GL503GE - 2019, WW26
GL703GE - 2019, WW26
FX505GE - 2019, WW26
FX505GD - 2019, WW26
FX505GM - 2019, WW26
FX705GE - 2019, WW26
FX705GD - 2019, WW26
FX705GM - 2019, WW26
GL704GM - 2019, WW26
G703GX - 2019, WW26
GX701GV - 2019, WW26
GX701GX - 2019, WW26
GX701GW - 2019, WW26
GX531GX - 2019, WW26
GX531GW - 2019, WW26
GX531GV - 2019, WW26

Download the appropriate BIOS update from the ASUS Support website at https://www.asus.com/support/

For more information, please review the security updates posted by Intel below:
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00233.html
https://www.intel.com/content/www/us/en/architecture-and-technology/mds.html