{"cve":"CVE-2019-3856","nvd":{"published":"2019-03-25T19:29:01.790","modified":"2026-10-14T07:16:51.650","status":"Modified","description":"An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-190","CWE-787"],"references":["http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html","http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html","https://access.redhat.com/errata/RHSA-2019:0679","https://access.redhat.com/errata/RHSA-2019:1175","https://access.redhat.com/errata/RHSA-2019:1652"],"products":["debian:debian_linux","fedoraproject:fedora","libssh2:libssh2","netapp:ontap_select_deploy_administration_utility","opensuse:leap","oracle:peoplesoft_enterprise_peopletools","redhat:enterprise_linux","redhat:enterprise_linux_desktop","redhat:enterprise_linux_server","redhat:enterprise_linux_server_aus","redhat:enterprise_linux_server_eus","redhat:enterprise_linux_server_tus","redhat:enterprise_linux_workstation"],"source":"nvd","synced_at":"2026-10-19T20:55:22.313337056+00:00"},"epss":{"cve":"CVE-2019-3856","score":0.06131,"percentile":0.93397,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}