CVE-2026-66334
OFBD SMM Write Validation Issues
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
AMI APTIOV contains vulnerabilities in BIOS where privileged users may cause the “Out-of-Bounds Write” 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 write hits unmapped memory. It could also impact Integrity, and Availability.
| CWE | CWE-787 |
| Vendor | ami |
| Product | aptiov |
| Published | Nov 10, 2026 |
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Affected Versions
AMI / AptioV
AptioV_5.0 < AptioV_5.046
References
Credits
Zhenyu Liu Huafeng Wang