libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."
结论预警: CVE-2016-0739 综合评估为中等风险（51/100）：CVSS 技术影响为中级，利用概率（EPSS 2.43%） 强制指令: 梳理受影响资产并纳入修补计划。
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 | 3.78% | 2.43% | -1.35% |
| 2 | 2026-05-25 | 3.66% | 3.78% | +0.12% |
| 3 | 2026-05-13 | — | 3.66% | — |
完整 EPSS 历史 （共 23 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 |
|---|---|---|---|---|---|---|
| 5.9 | 3.0 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2016-0739 not yet assigned priority: Debian including 1 source packages (libssh), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2016-0739 |
gentoo
|
normal | CVE-2016-0739: 1 GLSA(s) (201606-12), 2 atom(s) (net-libs/libssh, net-libs/libssh2); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-0739 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2016-0739 |
suse
|
medium | CVE-2016-0739 severity moderate: SUSE including 18 source package names (14.28:libssh4-0.6.3-11.1, libssh, …), 47 product×package rows across 22 product lines (Container suse/sles12sp4, SUSE Linux Enterprise Desktop 11 SP4, … (22 product lines)): Fixed 41, Known Not Affected 6. | https://www.suse.com/security/cve/CVE-2016-0739/ |
ubuntu
|
medium | CVE-2016-0739 medium priority: Ubuntu including 1 source packages (libssh), 6 status rows across 6 suites (precise, trusty, upstream, wily, xenial, yakkety): released 6. | https://ubuntu.com/security/CVE-2016-0739 |
| 厂商 | 产品 | 版本 | 原始 CPE |
|---|---|---|---|
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| 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:*:*:*:*:*:*:* |
| libssh | libssh | <= 0.7.2 | cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 22 | cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* |
| fedoraproject | fedora | 23 | cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* |
| 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:*:*:*:*:*:*:* |