# Xen Hypervisor Flaws Let a Malicious VM Read and Write Other VMs' Memory

Researchers disclosed vulnerabilities in the Xen hypervisor that allow a malicious or compromised guest virtual machine to read and write the memory of other VMs running on the same host. Xen underpins many public cloud and hosting platforms, so a successful exploit could break the isolation tenants rely on and expose data across customers. Patches have been released and operators are urged to apply them promptly.

**Importance:** 4/5

## Sources

### Security
- [The Hacker News](https://thehackernews.com/2026/11/xen-hypervisor-flaws-let-one-malicious.html) — Wed, 04 Nov 2026 17:16:27 +0530