VULNERABILITY INTELLIGENCE

CVE-2023-50887

CVSS score5.3 MEDIUM

EPSS probability0.23%

CISA KEVNot currently listed

Published2024-12-09

Last modified2026-06-17

Description

A bug in QEMU could cause a guest I/O operation otherwise addressed to an arbitrary disk offset to be targeted to offset 0 instead (potentially overwriting the VM's boot code). This could be used, for example, by L2 guests with a virtual disk (vdiskL2) stored on a virtual disk of an L1 (vdiskL1) hypervisor to read and/or write data to LBA 0 of vdiskL1, potentially gaining control of L1 at its next reboot.