Local code execution via unchecked buffer copy
Published Oct 14, 2025 · Updated Oct 14, 2025
An out-of-bounds write in affected AMI Aptio V firmware allows local users to execute arbitrary code through an unchecked buffer copy. The public record identifies a size-unchecked copy in the BIOS, but AMI has not disclosed the affected module, function, input source, or copy operation. Exploitation requires low-privileged local access, an additional runtime condition, and passive user interaction; successful memory corruption permits arbitrary code execution.
Summary
What happened
An out-of-bounds write in affected AMI Aptio V firmware allows local users to execute arbitrary code through an unchecked buffer copy. The public record identifies a size-unchecked copy in the BIOS, but AMI has not disclosed the affected module, function, input source, or copy operation. Exploitation requires low-privileged local access, an additional runtime condition, and passive user interaction; successful memory corruption permits arbitrary code execution.
The record
- CVE
- CVE-2025-22833
- 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
- Oct 14, 2025CVE publishedPublication date reported by the CVE source.
- 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.
- Affected versionversion=AptioV_5.0 <AptioV_5.040
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
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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