CVE-2026-42493
x86 shadow paging is deprecated
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | xen |
| Product | xen |
| Published | Jul 28, 2026 |
| Last Updated | Jul 28, 2026 |
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Affected Versions
Xen / Xen
All versions affected