Xen Hypervisor Flaws Allow Cross-VM Memory Access

# Xen Hypervisor Flaws Allow Cross-VM Memory Access

https://gcdradar.vercel.app/incidents/xen-hypervisor-flaws-allow-cross-vm-memory-access · AIR-2026-1767 · live

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability): Critical hypervisor flaws with patches released.
- Fix status: Patched
- First reported: 2026-11-04 (happened 2026-11-03)
- AI role: No AI role
- Products: Xen Hypervisor

## Summary

Two vulnerabilities in the Xen hypervisor allow malicious guest virtual machines to read and write memory across other VMs on the same host. The Xen Project released patches for all supported versions starting from 4.6.

## What to do

Apply the official patches provided by the Xen Project.

## Affected and fixed versions

- Affected: Xen Hypervisor 4.6 and later
- Fixed in: Xen Project security advisory patches

## Latest updates

- 2026-11-04: Xen Hypervisor Flaws Let One Malicious VM Read and Write Any Other VM's Memory (https://thehackernews.com/2026/11/xen-hypervisor-flaws-let-one-malicious.html)

## Sources

- 2026-11-04 The Hacker News: Xen Hypervisor Flaws Let One Malicious VM Read and Write Any Other VM's Memory https://thehackernews.com/2026/11/xen-hypervisor-flaws-let-one-malicious.html

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.