CVE-2026-66335 Heap Overflow in SmiVariable SMM Handler

AMI APTIOV contains vulnerabilities in BIOS where privileged users may cause the “Heap-based Buffer Overflow” by local access. Successful exploitation of this vulnerability may lead to a denial of service during firmware update processing, such as a crash or failed update if the out-of-bounds wri...

CVE-2026-66335

AMI APTIOV contains a Heap-based Buffer Overflow vulnerability within the SmiVariable SMM Handler in the BIOS. This flaw can be triggered by privileged users via local access . Successful exploitation may result in a denial of service during firmware update processing, potentially causing a syste...