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.
Published: 2026-08-11
Score: 4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The flaw arises from incorrect data forwarding during transient execution in certain Intel processors, enabling a system software adversary with a privileged user to expose information. The vulnerability may be triggered by a local user with elevated privileges and a complex attack, and it requires no user interaction. The primary impact is a high‑level confidentiality breach; integrity and availability are not affected.

Affected Systems

Intel(R) Processors are affected. No specific model or firmware version details are provided in the advisory, so any Intel processor that can run a ring 0 context (hypervisor or kernel) and is subject to the described transient execution handling may be vulnerable.

Risk and Exploitability

The CVSS score of 4 indicates a moderate severity, and the EPSS score of less than 1% suggests a low likelihood of exploitation at this time. The vulnerability is not listed in the CISA KEV catalog. Exploitation would require local access to a privileged user account and a relatively complex attack step, making it practical mainly in scenarios where the attacker already has administrative or hypervisor control.

Generated by OpenCVE AI on August 12, 2026 at 21:27 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the microcode update released in Intel SA‑01423 to all affected CPUs
  • Upgrade the operating system and hypervisor to versions that incorporate the Intel microcode patch
  • Limit local privileged user access to reduce the attack surface for potential exploitation

Generated by OpenCVE AI on August 12, 2026 at 21:27 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 13 Aug 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Intel
Intel intel Processors
Vendors & Products Intel
Intel intel Processors

Wed, 12 Aug 2026 21:45:00 +0000

Type Values Removed Values Added
Title Exposure of Sensitive Information via Incorrect Transient Execution Data Forwarding in Intel Processors

Wed, 12 Aug 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-1422
References
Metrics cvssV4_0

{'score': 4, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N'}


Subscriptions

Intel Intel Processors
cve-icon MITRE

Status: PUBLISHED

Assigner: intel

Published:

Updated: 2026-08-12T13:02:15.599Z

Reserved: 2025-12-09T04:00:18.778Z

Link: CVE-2026-20917

cve-icon Vulnrichment

Updated: 2026-08-12T13:02:12.505Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-11T18:17:24.723

Modified: 2026-08-12T20:54:11.500

Link: CVE-2026-20917

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T10:30:04Z

Weaknesses
  • CWE-1422

    Exposure of Sensitive Information caused by Incorrect Data Forwarding during Transient Execution