Vulnerability · Published Aug 11, 2026 · Assigned by intel

CVE-2026-21399

Medium 6.9

In plain English

A medium-severity heap buffer overflow in Intel(R) Open Volume Kernel Library (Intel(R) Open VKL) library maintained by intel(R). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 4.0)6.9Medium

Exploit odds (30 days)0.1%top 98.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
n/a	Intel(R) Open Volume Kernel Library (Intel(R) Open VKL) library maintained by intel(R)	before version 2.0.2

Weakness: CWE-122 · 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

References

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01459.html