Is CVE-2026-86563 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-86563 being exploited in the wild.

How severe is CVE-2026-86563?

High severity, with a CVSS score of 7.8, published 14 October 2026.

Which products and versions are affected?

DPDK Data Plane Development Kit .

Is there a fix for CVE-2026-86563?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-86563 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-86563?

Check whether you run DPDK Data Plane Development Kit at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-86563: DPDK lib/vhost double-offset buffer size vulnerability

CVE-2026-86563 · Severity: high · CVSS 7.8 · Published 2026-10-14

DPDK's vhost library, used in virtualization platforms to enable virtual machine communication, contains a calculation error that can lead to incorrect memory access. A malicious guest virtual machine that controls vhost-user log mapping could exploit this flaw to read, modify, or corrupt host memory, potentially compromising the hypervisor and other guest systems.

Vendors: DPDK.

Quick answers

Is CVE-2026-86563 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-86563 being exploited in the wild.
How severe is CVE-2026-86563?: High severity, with a CVSS score of 7.8, published 14 October 2026.
Which products and versions are affected?: DPDK Data Plane Development Kit <UNKNOWN>.
Is there a fix for CVE-2026-86563?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-86563 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-86563?: Check whether you run DPDK Data Plane Development Kit at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A double-offset bug in the vhost log mapping calculation in DPDK's lib/vhost allows incorrect memory access. The vulnerability can be triggered by a malicious guest that controls vhost-user log mapping, requiring local attack vector with low privileges and no user interaction. An attacker gains high impact on confidentiality, integrity, and availability of the host system.

Affected products

DPDK Data Plane Development Kit <UNKNOWN>

Timeline

2026-10-14: disclosed

References

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