CVE-2026-20917: Information Disclosure in Intel(R) Processors
CVE-2026-20917 is an information disclosure vulnerability affecting certain Intel processors. It involves incorrect data forwarding during transient execution within Ring 0 (Hypervisor and Kernel), potentially allowing a privileged local attacker to expose sensitive information. The attack requires high complexity and privileged access, with no user interaction needed. The vulnerability impacts system confidentiality but does not affect integrity or availability. No patch or official remediation guidance is currently available.
AI Analysis
Technical Summary
This vulnerability arises from incorrect data forwarding during transient execution on some Intel processors operating within Ring 0, specifically affecting the hypervisor and kernel layers. A system software adversary with privileged user access and high attack complexity may exploit this flaw to disclose sensitive information locally without user interaction or special internal knowledge. The vulnerability does not impact system integrity or availability but may lead to confidentiality breaches.
Potential Impact
The vulnerability may lead to unauthorized disclosure of sensitive information on affected Intel processors. It requires a privileged local attacker and high complexity to exploit. There is no impact on system integrity or availability. Confidentiality impact is rated high due to potential data exposure.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or mitigation is currently documented. Users should monitor Intel's advisories for updates.
CVE-2026-20917: Information Disclosure in Intel(R) Processors
Description
CVE-2026-20917 is an information disclosure vulnerability affecting certain Intel processors. It involves incorrect data forwarding during transient execution within Ring 0 (Hypervisor and Kernel), potentially allowing a privileged local attacker to expose sensitive information. The attack requires high complexity and privileged access, with no user interaction needed. The vulnerability impacts system confidentiality but does not affect integrity or availability. No patch or official remediation guidance is currently available.
CVSS v4.0
Score 4.0medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from incorrect data forwarding during transient execution on some Intel processors operating within Ring 0, specifically affecting the hypervisor and kernel layers. A system software adversary with privileged user access and high attack complexity may exploit this flaw to disclose sensitive information locally without user interaction or special internal knowledge. The vulnerability does not impact system integrity or availability but may lead to confidentiality breaches.
Potential Impact
The vulnerability may lead to unauthorized disclosure of sensitive information on affected Intel processors. It requires a privileged local attacker and high complexity to exploit. There is no impact on system integrity or availability. Confidentiality impact is rated high due to potential data exposure.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or mitigation is currently documented. Users should monitor Intel's advisories for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- intel
- Date Reserved
- 2025-12-09T04:00:18.778Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7b628dbf8831d5392312ab
Added to database: 08/11/2026, 17:57:33 UTC
Last enriched: 08/11/2026, 18:44:40 UTC
Last updated: 08/12/2026, 01:28:27 UTC
Views: 5
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