Answer in brief
CVE-2026-66332 records a Medium severity (CVSS 4.6) vulnerability in OOB-Read in FmpCapsuleUpdate. The current sources do not mark it as known exploited. The current feed maps AMI/AptioV (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 4.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps AMI/AptioV (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| AMI/AptioVgeneric | >=AptioV_5.0 <AptioV_5.045 | AptioV_5.045 |
Published upstream
Nov 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 10, 2026
AMI APTIOV contains a vulnerability in BIOS where a privileged user may cause the “Out-of-Bound Read” 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 read hits unmapped memory. It could also potentially impact Confidentiality and Availability.
Quoted source text, attributed separately from HOL analysis.