Security Notifications
With experts in UEFI firmware development across the globe, the Phoenix Security Team is dedicated to establishing and fortifying trust in firmware.
High Severity Vulnerability in Acer Notebook Devices
A vulnerability has been discovered in the HQSwSmiDxe DXE driver on some consumer Acer Notebook devices, which may allow an attacker with elevated privileges to modify UEFI Secure Boot settings by modifying an NVRAM variable.
The BlackLotus Campaign
Microsoft Incident Report | CVE-2022-21894
In April 2023, cybersecurity researchers at Microsoft identified a dangerous UEFI bootkit (CVE-2022-21894), dubbed “BlackLotus”. It operates at computer startup, compromising systems and disabling OS security mechanisms.
High Severity Vulnerability in Acer Aspire E5-475G BIOS
A stack overflow vulnerability has been found in the BIOS firmware of Aspire E5-475G laptops, which can allow local attackers to execute arbitrary code and gain escalated privileges during the boot process.
CosmicStrand: The Discovery of a Sophisticated UEFI Firmware Rootkit
Reference Article
CosmicStrand appears to be the work of an unknown Chinese-speaking threat actor.
MoonBounce: Chinese Group Deploys MoonBounce Implant in UEFI Firmware
The highly targeted attack reveals a new level of sophistication in attacks against UEFI firmware.