Qemu emulator <= 3.0.0 built with the NE2000 NIC emulation support is vulnerable to an integer overflow, which could lead to buffer overflow issue. It could occur when receiving packets over the network. A user inside guest could use this flaw to crash the Qemu process resulting in DoS.
Exploitability
AV:NAC:HPR:NUI:NScope
S:UImpact
C:NI:LA:H6.5/CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:HOther