AMI AptioV up to 5.44 Firmware Update out-of-bounds

Summaryinfo

A vulnerability described as problematic has been identified in AMI AptioV up to 5.44. This affects an unknown part of the component Firmware Update. Such manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2026-66332. The attack needs to be performed locally. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in AMI AptioV up to 5.44 and classified as problematic. Affected by this issue is an unknown code block of the component Firmware Update. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at go.ami.com. This vulnerability is handled as CVE-2026-66332 since 07/24/2026. The exploitation is known to be easy. Local access is required to approach this attack. The exploitation needs additional levels of successful authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading to version 5.045 eliminates this vulnerability.

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Productinfo

Vendor

• AMI

Name

• AptioV

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11
• 5.12
• 5.13
• 5.14
• 5.15
• 5.16
• 5.17
• 5.18
• 5.19
• 5.20
• 5.21
• 5.22
• 5.23
• 5.24
• 5.25
• 5.26
• 5.27
• 5.28
• 5.29
• 5.30
• 5.31
• 5.32
• 5.33
• 5.34
• 5.35
• 5.36
• 5.37
• 5.38
• 5.39
• 5.40
• 5.41
• 5.42
• 5.43
• 5.44

CPE 2.3info

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CPE 2.2info

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