VULNERABILITY INTELLIGENCE
CVE-2026-42493
CVSS score7.5 HIGH
EPSS probability0.45%
CISA KEVNot currently listed
Published2026-07-28
Last modified2026-07-28
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Addressing certain issues, in particular related to operations which may take excessively long and therefore would need preemption, has turned out overly costly. Since alternatives (HVM/PVH: HAP, PV: shim) are commonly available, the decision was to deprecate the functionality, while still retaining it for people to use at their own (security) risk. Memory-wise small enough guests may still be okay to run.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-400