{"cve":"CVE-2016-0739","nvd":{"published":"2016-04-13T17:59:08.413","modified":"2026-06-17T00:38:07.810","status":"Modified","description":"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.\"","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9},"cwes":["CWE-200"],"references":["http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html","http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html","http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html","http://rhn.redhat.com/errata/RHSA-2016-0566.html","http://www.debian.org/security/2016/dsa-3488"],"products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora","libssh:libssh","redhat:enterprise_linux"],"source":"nvd","synced_at":"2026-10-19T20:38:51.654415212+00:00"},"epss":{"cve":"CVE-2016-0739","score":0.02431,"percentile":0.84248,"date":"2026-10-31"},"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."]}