Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read) via invalid utf-8 encoded data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-4356.
結論預警: CVE-2016-4574 綜合評估為中等風險（59.6/100）：CVSS 技術影響為高級，利用機率（EPSS 2.76%） 強制指令: 梳理受影響資產並納入修補計畫。
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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 | 2026-07-01 | 2.71% | 2.76% | +0.05% |
| 2 | 2026-06-15 | 1.09% | 2.71% | +1.62% |
| 3 | 2026-05-13 | — | 1.09% | — |
完整 EPSS 歷史 （共 15 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-2016-4574 not yet assigned priority: Debian including 1 source packages (libksba), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-4574 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2016-4574 |
suse
|
high | CVE-2016-4574 severity important: SUSE including 261 source package names (0.9.1:libksba8-1.3.0-23.1, 1.0.0:libksba8-1.3.0-23.1, …), 330 product×package rows across 89 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (89 product lines)): Fixed 173, Known Affected 157. | https://www.suse.com/security/cve/CVE-2016-4574/ |
ubuntu
|
medium | CVE-2016-4574 medium priority: Ubuntu including 1 source packages (libksba), 5 status rows across 5 suites (precise, trusty, upstream, wily, xenial): released 5. | https://ubuntu.com/security/CVE-2016-4574 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| gnupg | libksba | <= 1.3.3 | cpe:2.3:a:gnupg:libksba:*:*:*:*:*:*:*:* |
| 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:*:*:* |
| opensuse | leap | 42.1 | cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:* |
| opensuse | opensuse | 13.2 | cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:* |