CVE-2026-21399 Memory corruption in Intel(R) Open Volume Kernel Library (Intel(R) Open VKL) library maintained by intel(R)
A heap-based buffer overflow in the Intel Open VKL library allows a local attacker to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-21399?
CVE-2026-21399 is a medium-severity memory corruption vulnerability in Intel(R) Open Volume Kernel Library (Intel(R) Open VKL) library maintained by intel(R), published on 11 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-122
Which versions are affected by CVE-2026-21399?
It affects 1 product.
Products include Intel Open Vkl.
How do I fix CVE-2026-21399?
No fix has been published for CVE-2026-21399 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-21399 being exploited?
There is no known exploitation of CVE-2026-21399 in the wild and no public exploit code.
Sources
Also known as GHSA-89w3-r78p-gf49.