Privilege escalation from privileged local access
Published Sep 16, 2024 · Updated Nov 3, 2025
Improper input validation in Intel Xeon D-2799 Processor UEFI firmware allows local users with privileged access to escalate privileges. Intel identifies the affected locus only as UEFI firmware and has not disclosed which input is mishandled or which validation operation is missing. The attacker must already have privileged local access, and successful exploitation can compromise data and system operation beyond the original security authority.
Summary
What happened
Improper input validation in Intel Xeon D-2799 Processor UEFI firmware allows local users with privileged access to escalate privileges. Intel identifies the affected locus only as UEFI firmware and has not disclosed which input is mishandled or which validation operation is missing. The attacker must already have privileged local access, and successful exploitation can compromise data and system operation beyond the original security authority.
The record
- CVE
- CVE-2024-21871
- Published
- Sep 16, 2024
- Updated
- Nov 3, 2025
- Vendor
- Topcon Positioning Systems, Inc.
- Product
- Intel Xeon D-2799 Processor Firmware
- Classifications
- CWE-20, T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Sep 16, 2024CVE publishedPublication date reported by the CVE source.
- Nov 3, 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?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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