Privilege escalation via incorrect firmware control flow
Published Aug 11, 2026 · Updated Aug 11, 2026
Privilege escalation in Intel Xeon processor firmware allows local privileged users to cross a processor security boundary. The firmware implements always-incorrect control flow, but Intel has not disclosed the affected routine, input, or erroneous operation. Exploitation requires local high privileges and high complexity and grants subsequent confidentiality and integrity impact without interrupting the vulnerable system.
Summary
What happened
Privilege escalation in Intel Xeon processor firmware allows local privileged users to cross a processor security boundary. The firmware implements always-incorrect control flow, but Intel has not disclosed the affected routine, input, or erroneous operation. Exploitation requires local high privileges and high complexity and grants subsequent confidentiality and integrity impact without interrupting the vulnerable system.
The record
- CVE
- CVE-2026-20713
- Published
- Aug 11, 2026
- Updated
- Aug 11, 2026
- Vendor
- Intel Corporation
- Product
- Intel Xeon Processors
- Classifications
- CWE-670, T1068
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 11, 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?
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- Affected versionversion=See references
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
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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