Permanent service loss via unprotected DDR5 PMIC
Published May 15, 2026 · Updated May 15, 2026
Incorrect default permissions in AGESA Bootloader Firmware allow local users to corrupt DDR5 modules or cause permanent service loss. The firmware leaves the DDR5 power-management integrated-circuit interface unprotected, permitting writes that alter module state. Local low-privilege code must reach the PMIC interface; successful abuse can damage module integrity or make the affected system unusable.
Summary
What happened
Incorrect default permissions in AGESA Bootloader Firmware allow local users to corrupt DDR5 modules or cause permanent service loss. The firmware leaves the DDR5 power-management integrated-circuit interface unprotected, permitting writes that alter module state. Local low-privilege code must reach the PMIC interface; successful abuse can damage module integrity or make the affected system unusable.
The record
- CVE
- CVE-2025-48516
- Published
- May 15, 2026
- Updated
- May 15, 2026
- Vendor
- Advanced Micro Devices, Inc.
- Product
- AMD Ryzen™ 7000 Series Desktop Processors
- Classifications
- CWE-276, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 15, 2026CVE publishedPublication date reported by the CVE source.
- May 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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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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