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 write hits unmapped memory. It could also impact Confidentiality,
Integrity, and Availability.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| AMI | AptioV | unaffected |
|
No data.
No data.
No data available yet.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Tue, 10 Nov 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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 write hits unmapped memory. It could also impact Confidentiality, Integrity, and Availability. | |
| Title | Heap Overflow in SmiVariable SMM Handler | |
| References |
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| Metrics |
cvssV4_0
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Subscriptions
No data.
MITRE
Status: PUBLISHED
Assigner: AMI
Published:
Updated: 2026-11-10T16:23:12.686Z
Reserved: 2026-07-24T21:31:28.218Z
Link: CVE-2026-66335
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-11-10T17:17:46.873
Modified: 2026-11-10T17:17:46.873
Link: CVE-2026-66335
Redhat
No data.
OpenCVE Enrichment
No data.
No weakness.