{"id":"USN-7270-2","summary":"openssh vulnerability","details":"USN-7270-1 fixed a vulnerability in OpenSSH. This update provides\nthe corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that the OpenSSH client incorrectly handled the\n non-default VerifyHostKeyDNS option. If that option were enabled, an\n attacker could possibly impersonate a server by completely bypassing the\n server identity check. (CVE-2025-26465)\n","modified":"2026-02-10T04:46:30Z","published":"2025-02-18T18:00:52Z","related":["UBUNTU-CVE-2025-26465"],"upstream":["CVE-2025-26465","UBUNTU-CVE-2025-26465"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7270-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-26465"}],"affected":[{"package":{"name":"openssh","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/openssh@1:7.2p2-4ubuntu2.10+esm7?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.2p2-4ubuntu2.10+esm7"}]}],"versions":["1:6.9p1-2","1:6.9p1-3","1:7.1p1-1","1:7.1p1-3","1:7.1p1-4","1:7.1p1-6","1:7.1p2-1","1:7.1p2-2","1:7.2p1-1","1:7.2p2-1","1:7.2p2-2","1:7.2p2-3","1:7.2p2-4","1:7.2p2-4ubuntu1","1:7.2p2-4ubuntu2.1","1:7.2p2-4ubuntu2.2","1:7.2p2-4ubuntu2.4","1:7.2p2-4ubuntu2.5","1:7.2p2-4ubuntu2.6","1:7.2p2-4ubuntu2.7","1:7.2p2-4ubuntu2.8","1:7.2p2-4ubuntu2.10","1:7.2p2-4ubuntu2.10+esm1","1:7.2p2-4ubuntu2.10+esm2","1:7.2p2-4ubuntu2.10+esm3","1:7.2p2-4ubuntu2.10+esm4","1:7.2p2-4ubuntu2.10+esm5","1:7.2p2-4ubuntu2.10+esm6"],"ecosystem_specific":{"binaries":[{"binary_version":"1:7.2p2-4ubuntu2.10+esm7","binary_name":"openssh-client"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm7","binary_name":"openssh-client-ssh1"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm7","binary_name":"openssh-server"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm7","binary_name":"openssh-sftp-server"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm7","binary_name":"ssh"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm7","binary_name":"ssh-askpass-gnome"},{"binary_version":"1:7.2p2-4ubuntu2.10+esm7","binary_name":"ssh-krb5"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-26465"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7270-2.json"}},{"package":{"name":"openssh","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/openssh@1:7.6p1-4ubuntu0.7+esm4?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:7.6p1-4ubuntu0.7+esm4"}]}],"versions":["1:7.5p1-10","1:7.6p1-4","1:7.6p1-4ubuntu0.1","1:7.6p1-4ubuntu0.2","1:7.6p1-4ubuntu0.3","1:7.6p1-4ubuntu0.5","1:7.6p1-4ubuntu0.6","1:7.6p1-4ubuntu0.7","1:7.6p1-4ubuntu0.7+esm1","1:7.6p1-4ubuntu0.7+esm2","1:7.6p1-4ubuntu0.7+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"1:7.6p1-4ubuntu0.7+esm4","binary_name":"openssh-client"},{"binary_version":"1:7.6p1-4ubuntu0.7+esm4","binary_name":"openssh-server"},{"binary_version":"1:7.6p1-4ubuntu0.7+esm4","binary_name":"openssh-sftp-server"},{"binary_version":"1:7.6p1-4ubuntu0.7+esm4","binary_name":"ssh"},{"binary_version":"1:7.6p1-4ubuntu0.7+esm4","binary_name":"ssh-askpass-gnome"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2025-26465"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7270-2.json"}}],"schema_version":"1.7.3"}