CVE-2025-22832

Data corruption via NTFS ATTRIBUTE_LIST out-of-bounds write

Published Oct 14, 2025 · Updated Oct 14, 2025

Out-of-bounds write in American Megatrends International Aptio V allows local users to corrupt firmware memory through NTFS parsing. The BIOS NTFS parser writes beyond a buffer boundary while processing an ATTRIBUTE_LIST record; AMI has not disclosed the affected function or missing validation. Low-privilege local access and specific execution conditions are required; exploitation corrupts data and can interrupt system availability.

CVSS severity5.9
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in American Megatrends International Aptio V allows local users to corrupt firmware memory through NTFS parsing. The BIOS NTFS parser writes beyond a buffer boundary while processing an ATTRIBUTE_LIST record; AMI has not disclosed the affected function or missing validation. Low-privilege local access and specific execution conditions are required; exploitation corrupts data and can interrupt system availability.

The record

CVE
CVE-2025-22832
Published
Oct 14, 2025
Updated
Oct 14, 2025
Vendor
American Megatrends International
Product
Aptio V
Classifications
CWE-787
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=AptioV_5.0 <AptioV_5.040

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

American Megatrends International · Aptio Vversion=AptioV_5.0 <AptioV_5.040

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.9AMICVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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