A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.
結論預警: CVE-2019-3863 綜合評估為中等風險（55.6/100）：CVSS 技術影響為高級，利用機率（EPSS 3.44%） 強制指令: 梳理受影響資產並納入修補計畫。
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。
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 | 2026-06-15 | 8.61% | 3.44% | -5.18% |
| 2 | 2026-03-30 | 9.76% | 8.61% | -1.14% |
| 3 | 2026-02-10 | — | 9.76% | — |
完整 EPSS 歷史 （共 29 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 |
|
1.6 | 5.9 | [email protected] |
| 8.8 | 3.0 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2019-3863: 1 source package rows (libssh2); 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-2019-3863 |
debian
|
not yet assigned | CVE-2019-3863 not yet assigned priority: Debian including 1 source packages (libssh2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-3863 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2019-3863 |
suse
|
medium | CVE-2019-3863 severity moderate: SUSE including 384 source package names (0.38.1.5.8.40:libssh2-1-1.9.0-4.13.1, 0.38.1.5.8.45:libssh2-1-1.9.0-4.13.1, …), 495 product×package rows across 88 product lines (Container caasp/v4/nginx-ingress-controller, Container suse/sles/15.2/virt-handler, … (88 product lines)): Fixed 234, Known Affected 231, Known Not Affected 30. | https://www.suse.com/security/cve/CVE-2019-3863/ |
ubuntu
|
medium | CVE-2019-3863 medium priority: Ubuntu including 1 source packages (libssh2), 19 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 14, released 2, ignored 1, needed 1, needs-triage 1. | https://ubuntu.com/security/CVE-2019-3863 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| libssh2 | libssh2 | < 1.8.1 | cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| netapp | ontap_select_deploy_administration_utility | — | cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* |
| opensuse | leap | 15.0 | cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* |
| opensuse | leap | 42.3 | cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:* |
| redhat | enterprise_linux_desktop | 7.0 | cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server | 7.0 | cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 7.6 | cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_eus | 7.6 | cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 7.6 | cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* |
| redhat | enterprise_linux_workstation | 7.0 | cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* |