CVE-2026-0665

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

An off-by-one error was found in QEMU's KVM Xen guest support. A malicious guest could use this flaw to trigger out-of-bounds heap accesses in the QEMU process via the emulated Xen physdev hypercall interface, leading to a denial of service or potential memory corruption.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Weakness enumeration

Affected software

VendorProductVersions
——>= 8.0.0, <= 10.2.0
Red HatRed Hat Enterprise Linux 10—
Red HatRed Hat Enterprise Linux 6—
Red HatRed Hat Enterprise Linux 7—
Red HatRed Hat Enterprise Linux 7—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat OpenShift Container Platform 4—

References

Timeline

Published
Feb 18, 2026
Last modified
Jun 17, 2026
NVD status
Deferred

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CVE-2026-0665: Medium severity, CVSS 6.5 | Vulnix