Local privilege escalation via undisclosed BIOS intermediary
Published May 12, 2022 · Updated May 5, 2025
Privilege escalation in the BIOS authenticated code module for some Intel processors allows privileged local users to gain elevated access. Intel identifies an unintended intermediary in the module but does not disclose the intermediary, affected operation, or input path. Exploitation requires high-privilege local access and is limited to the processor platforms identified in Intel's advisory.
Summary
What happened
Privilege escalation in the BIOS authenticated code module for some Intel processors allows privileged local users to gain elevated access. Intel identifies an unintended intermediary in the module but does not disclose the intermediary, affected operation, or input path. Exploitation requires high-privilege local access and is limited to the processor platforms identified in Intel's advisory.
The record
- CVE
- CVE-2021-33103
- Published
- May 12, 2022
- Updated
- May 5, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- Unavailable
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- May 12, 2022CVE publishedPublication date reported by the CVE source.
- May 5, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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