CVE-2026-0665
6.5
MEDIUM
CVSS 3.1
EPSS 0.01%
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.
How to fix CVE-2026-0665
To remediate CVE-2026-0665, upgrade the affected package to a fixed version below.
- Debian/qemu—upgrade to 1:10.0.8+ds-0+deb13u1 or later
Is CVE-2026-0665 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:10.0.8+ds-0+deb13u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |