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.
结论预警: CVE-2016-9603 综合评估为中等风险（57.4/100）：CVSS 技术影响为中级，利用概率偏高（EPSS 4.45%，百分位 90%） 核心证据: EPSS 显示该漏洞近期被利用的可能性处于高位。 近一日 EPSS 上升 +3.86%，被利用关注度持续升高。 强制指令: 被利用概率偏高—请排查暴露面并优先安排修补。
风险随态势动态变化；本站持续评估并同步更新本页展示内容。
EPSS 日更估计相对被利用可能性；百分位表示该 CVE 在已评分漏洞中的相对排名（越高表示相对更严重）。
| # | 日期 | 旧 EPSS 分数 | 新 EPSS 分数 | 变化（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.59% | 4.45% | +3.86% |
| 2 | 2026-05-17 | 1.59% | 0.59% | -1.00% |
| 3 | 2026-02-10 | — | 1.59% | — |
完整 EPSS 历史 （共 15 条）
该 CVE 的 CVSS 指标。
| 底座分 | 版本 | 严重度 | 向量 | 可利用性 | 影响 | 分数来源 |
|---|---|---|---|---|---|---|
| 5.5 | 3.0 | MEDIUM |
|
1.3 | 3.7 | [email protected] |
| 9.9 | 3.0 | CRITICAL |
|
3.1 | 6.0 | [email protected] |
| 9.0 | 2.0 | HIGH |
|
8.0 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2016-9603: 1 source package rows (xen); 10 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 10, open 0. | https://security.alpinelinux.org/vuln/CVE-2016-9603 |
debian
|
not yet assigned | CVE-2016-9603 not yet assigned priority: Debian including 2 source packages (qemu, xen), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. | https://security-tracker.debian.org/tracker/CVE-2016-9603 |
gentoo
|
normal | CVE-2016-9603: 1 GLSA(s) (201706-03), 1 atom(s) (app-emulation/qemu); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-9603 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2016-9603 |
suse
|
low | CVE-2016-9603 severity low: SUSE including 112 source package names (kvm-1.4.2-53.11.1, kvm-1.4.2-60.3.1, …), 276 product×package rows across 33 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise Desktop 12 SP1, … (33 product lines)): Fixed 230, Known Not Affected 46. | https://www.suse.com/security/cve/CVE-2016-9603/ |
ubuntu
|
medium | CVE-2016-9603 medium priority: Ubuntu including 3 source packages (qemu, qemu-kvm, xen), 18 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): DNE 5, released 5, not-affected 4, needs-triage 2, ignored 1, needed 1. | https://ubuntu.com/security/CVE-2016-9603 |
| 厂商 | 产品 | 版本 | 原始 CPE |
|---|---|---|---|
| qemu | qemu | < 2.9.0 | cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* |
| citrix | xenserver | 6.0.2 | cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:* |
| citrix | xenserver | 6.2.0 | cpe:2.3:a:citrix:xenserver:6.2.0:sp1:*:*:*:*:*:* |
| citrix | xenserver | 6.5 | cpe:2.3:a:citrix:xenserver:6.5:sp1:*:*:*:*:*:* |
| citrix | xenserver | 7.0 | cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:* |
| citrix | xenserver | 7.1 | cpe:2.3:a:citrix:xenserver:7.1:*:*:*:*:*:*:* |
| redhat | openstack | 5.0 | cpe:2.3:a:redhat:openstack:5.0:*:*:*:*:*:*:* |
| redhat | openstack | 6.0 | cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:* |
| redhat | openstack | 7.0 | cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:* |
| redhat | openstack | 8 | cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:* |
| redhat | openstack | 9 | cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:* |
| redhat | openstack | 10 | cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:* |
| debian | debian_linux | 7.0 | cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 6.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 7.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 6.0 | cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.3 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.4 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.5 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 6.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 7.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* |