Pre-boot memory read and write via uninitialized IOMMU
Published Dec 17, 2025 · Updated Dec 17, 2025
Protection mechanism failure in ASRock Group Intel 500 through 800 series motherboards allows physical attackers to alter pre-boot memory. During UEFI initialization, firmware reports DMA protection as active without configuring and enabling the platform IOMMU. Physical access and a DMA-capable PCIe device permit reading or modifying system memory before kernel defenses load, including pre-boot code injection.
Summary
What happened
Protection mechanism failure in ASRock Group Intel 500 through 800 series motherboards allows physical attackers to alter pre-boot memory. During UEFI initialization, firmware reports DMA protection as active without configuring and enabling the platform IOMMU. Physical access and a DMA-capable PCIe device permit reading or modifying system memory before kernel defenses load, including pre-boot code injection.
The record
- CVE
- CVE-2025-14304
- Published
- Dec 17, 2025
- Updated
- Dec 17, 2025
- Vendor
- ASRock Rack Inc.
- Product
- Intel 800 Series Platform Motherboards
- Classifications
- CWE-693, CAPEC-401, T1200
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 17, 2025CVE publishedPublication date reported by the CVE source.
- Dec 17, 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?
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- Affected versionversion=0
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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