CVE-2026-21399

Heap Buffer Overflow in Intel Open VKL Causes Denial of Service

Published Aug 11, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
Heap-based buffer overflow for the Intel(R) Open Volume Kernel Library (Intel(R) Open VKL) library maintained by intel(R) before version 2.0.2 within Ring 3: User Applications may allow a denial of service. System software adversary with an authenticated user combined with a low complexity attack may enable denial of service. 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 (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Intel open Vkl
CPEs cpe:2.3:a:intel:open_vkl:*:*:*:*:*:*:*:*
Vendors & Products Intel open Vkl
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H'}

Type Values Removed Values Added
First Time appeared Intel
Intel open Volume Kernel Library
Vendors & Products Intel
Intel open Volume Kernel Library
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Title Heap Buffer Overflow in Intel Open VKL Causes Denial of Service
Type Values Removed Values Added
Description Heap-based buffer overflow for the Intel(R) Open Volume Kernel Library (Intel(R) Open VKL) library maintained by intel(R) before version 2.0.2 within Ring 3: User Applications may allow a denial of service. System software adversary with an authenticated user combined with a low complexity attack may enable denial of service. 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 (low) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Weaknesses CWE-122
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
intel
Published
Updated
Aug 12, 2026, 3:28 PM
Reserved
Dec 19, 2025, 4:00 AM
Status
Analyzed
Published
Aug 11, 2026, 5:17 PM
Modified
Oct 15, 2026, 8:47 PM