CVE-2015-8744: QEMU (aka Quick Emulator) built with a VMWARE VMXNET3 paravirtual NIC emulator support is vulnerable to cra...

Security readout for executives and security teams

CVE-2015-8744 can let a privileged user inside a guest VM crash that VM's QEMU process when the VM uses QEMU's VMware VMXNET3 network device emulation. The documented impact is denial of service for the affected virtual machine process, not host code execution or guest escape. Exposure is most likely on virtualization hosts running QEMU with VMXNET3 emulated NIC support enabled for guests. Systems using other virtual NIC models, or without privileged guest users able to exercise raw I/O paths, appear less exposed based on the provided sources. Treat this as a targeted virtualization availability risk. Prioritize shared or multi-tenant QEMU environments where guest administrators are less trusted, then update routine single-tenant systems through normal maintenance. Mitigation focus: Apply QEMU updates from the relevant OS or virtualization vendor.; Check whether vendor packages include the upstream VMXNET3 validation fix.; Reduce use of VMXNET3 devices where they are not operationally required..

Prepared

Jun 13, 2026, 12:51 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.