It was found that after virtual machine conversion using virt-v2v the target VM does not have VNC password enabled even though the source VM does. An attacker able to connect to the target VM can possibly use this flaw to operate the VM with privileges of the logged in user.

libguestfs before 1.5.23, as used in virt-v2v, virt-inspector 1.5.3 and earlier, and possibly other products, when a raw-format disk image is used, allows local guest OS administrators to read files from the host via a crafted (1) qcow2, (2) VMDK, or (3) VDI header, related to lack of support for a disk format specifier.