CVE-2026-66334 (GCVE-0-2026-66334)

Vulnerability from cvelistv5 – Published: 2026-11-10 16:22 – Updated: 2026-11-10 16:22
VLAI
Title
OFBD SMM Write Validation Issues
Summary
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.
Severity
6.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
CWE
Assigner
AMI CNA
References
Impacted products
Vendor Product Version
AMI AptioV Affected: AptioV_5.0 , < AptioV_5.046 (custom)
Create a notification for this product.
Credits
Zhenyu Liu Huafeng Wang
Show details on NVD website
To clipboard 

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            "valueDensity": "NOT_DEFINED",
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        "orgId": "7e9044f1-7f56-4c38-8864-c0c7302263d6",
        "shortName": "AMI"
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    "dateReserved": "2026-07-24T21:31:28.218Z",
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