CVE-2026-20917: Information Disclosure in Intel(R) Processors
Exposure of sensitive information caused by incorrect data forwarding during transient execution for some Intel(R) Processors within Ring 0: Hypervisor and Kernel may allow information disclosure. System software adversary with a privileged user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts.
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
Exposure of sensitive information caused by incorrect data forwarding during transient execution for some Intel(R) Processors within Ring 0: Hypervisor and Kernel may allow information disclosure. System software adversary with a privileged user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (none) and availability (none) impacts.
CVSS v4.0
Score 4.0medium
Affected software
Intel(R) Processors
Weaknesses
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
Threat ID: 6a7b628dbf8831d5392312ab
Added to database: 08/11/2026, 17:57:33 UTC
Last enriched: 08/11/2026, 18:44:40 UTC
Last updated: 09/23/2026, 13:47:43 UTC
Views: 37
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.