The xmlParseElementDecl function in parser.c in libxml2 before 2.9.4 allows context-dependent attackers to cause a denial of service (heap-based buffer underread and application crash) via a crafted file, involving xmlParseName.
結論預警: CVE-2016-4447 綜合評估為高可利用風險（79/100）：CVSS 技術影響為高級，利用機率偏高（EPSS 13.98%，百分位 96%） 核心證據: 已收錄 1 筆公開利用參考（Exploit-DB）。 強制指令: 存在公開利用—請盤點暴露面、落實緩解措施並優先修補。
風險隨態勢動態變化；本站持續評估並同步更新本頁展示內容。
| EDB-ID | 來源 | 類型 | 公開時間 | 連結 |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS 日更估計相對被利用可能性；百分位表示該 CVE 在已評分漏洞中的相對排名（越高表示相對更嚴重）。
| # | 日期 | 舊 EPSS 分數 | 新 EPSS 分數 | 變化（新 − 舊） |
|---|---|---|---|---|
| 1 | 2026-06-26 | 13.62% | 13.98% | +0.36% |
| 2 | 2026-06-15 | 2.66% | 13.62% | +10.96% |
| 3 | 2026-05-13 | — | 2.66% | — |
完整 EPSS 歷史 （共 55 筆）
該 CVE 的 CVSS 指標。
| 底座分 | 版本 | 嚴重度 | 向量 | 可利用性 | 影響 | 分數來源 |
|---|---|---|---|---|---|---|
| 7.5 | 3.0 | HIGH |
|
3.9 | 3.6 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2016-4447 not yet assigned priority: Debian including 1 source packages (libxml2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-4447 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2016-4447 |
suse
|
medium | CVE-2016-4447 severity moderate: SUSE including 19 source package names (libxml2-2-2.9.1-24.1, libxml2-2-32bit-2.9.1-24.1, …), 76 product×package rows across 20 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise Desktop 12, … (20 product lines)): Fixed 76. | https://www.suse.com/security/cve/CVE-2016-4447/ |
ubuntu
|
low | CVE-2016-4447 low priority: Ubuntu including 1 source packages (libxml2), 7 status rows across 7 suites (precise, trusty, upstream, wily, xenial, yakkety, zesty): released 5, not-affected 2. | https://ubuntu.com/security/CVE-2016-4447 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| hp | icewall_federation_agent | 3.0 | cpe:2.3:a:hp:icewall_federation_agent:3.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
| canonical | ubuntu_linux | 15.10 | cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 16.04 | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* |
| debian | debian_linux | 7.0 | cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| oracle | vm_server | 3.3 | cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:* |
| oracle | vm_server | 3.4 | cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:* |
| apple | itunes | 12.4.1 | cpe:2.3:a:apple:itunes:12.4.1:*:*:*:*:*:*:* |
| apple | iphone_os | <= 9.3.2 | cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* |
| apple | mac_os_x | <= 10.11.5 | cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* |
| apple | tvos | <= 9.2.1 | cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* |
| apple | watchos | <= 2.2.1 | cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* |
| xmlsoft | libxml2 | <= 2.9.3 | cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* |
| mcafee | web_gateway | >= 7.5.0.0, <= 7.5.2.10 | cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:* |
| mcafee | web_gateway | >= 7.6.0.0, <= 7.6.2.3 | cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:* |