CVSS 3.0
9.9 criticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HCVE-2016-9603
Critical (9.9). EPSS 4.4% chance of exploitation in the next 30 days.
A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.
Severity
- EPSS
- 4.4% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-119, CWE-122
- Published
- Modified
- Record from
- the NVD, synced
Affected
- citrix:xenserver
- debian:debian_linux
- qemu:qemu
- redhat:enterprise_linux_desktop
- redhat:enterprise_linux_server
- redhat:enterprise_linux_server_aus
- redhat:enterprise_linux_server_eus
- redhat:enterprise_linux_workstation
- redhat:openstack