{"id":"USN-9081-1","summary":"openconnect vulnerability","details":"It was discovered that OpenConnect incorrectly handled certain certificate\ndata, leading to a buffer overflow. A remote attacker could possibly use\nthis issue to cause OpenConnect to crash, resulting in a denial of service,\nor possibly execute arbitrary code.","modified":"2026-11-13T11:28:25.217121476Z","published":"2026-11-12T20:53:50Z","related":["UBUNTU-CVE-2020-12823"],"upstream":["CVE-2020-12823","UBUNTU-CVE-2020-12823"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-9081-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12823"}],"affected":[{"package":{"name":"openconnect","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/openconnect?arch=source&distro=esm-apps-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.06-2ubuntu0.1~esm1"}]}],"versions":["7.06-2build1","7.06-2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenconnect5","binary_version":"7.06-2ubuntu0.1~esm1"},{"binary_version":"7.06-2ubuntu0.1~esm1","binary_name":"openconnect"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2020-12823","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:Pro:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9081-1.json"}},{"package":{"name":"openconnect","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/openconnect?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-3ubuntu0.18.04.2+esm1"}]}],"versions":["7.08-1","7.08-2","7.08-3","7.08-3ubuntu0.18.04.1","7.08-3ubuntu0.18.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenconnect5","binary_version":"7.08-3ubuntu0.18.04.2+esm1"},{"binary_version":"7.08-3ubuntu0.18.04.2+esm1","binary_name":"openconnect"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2020-12823"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9081-1.json"}},{"package":{"name":"openconnect","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/openconnect?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.05-1ubuntu0.1~esm1"}]}],"versions":["8.02-1build1","8.05-1"],"ecosystem_specific":{"binaries":[{"binary_version":"8.05-1ubuntu0.1~esm1","binary_name":"libopenconnect5"},{"binary_name":"openconnect","binary_version":"8.05-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"id":"CVE-2020-12823","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9081-1.json"}}],"schema_version":"1.9.2"}