{"id":"UBUNTU-CVE-2026-78133","details":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","modified":"2026-09-21T21:38:23.815008925Z","published":"2026-09-07T12:00:00Z","related":["USN-8789-1"],"upstream":["CVE-2026-78133"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-78133"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-78133"},{"type":"REPORT","url":"https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78133).html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8789-1"}],"affected":[{"package":{"name":"strongswan","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/strongswan?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.4-1ubuntu3.2"}]}],"versions":["6.0.1-6ubuntu4","6.0.1-6ubuntu5","6.0.4-1ubuntu1","6.0.4-1ubuntu2","6.0.4-1ubuntu3","6.0.4-1ubuntu3.1"],"ecosystem_specific":{"binaries":[{"binary_name":"charon-cmd","binary_version":"6.0.4-1ubuntu3.2"},{"binary_name":"charon-systemd","binary_version":"6.0.4-1ubuntu3.2"},{"binary_name":"libcharon-extauth-plugins","binary_version":"6.0.4-1ubuntu3.2"},{"binary_name":"libcharon-extra-plugins","binary_version":"6.0.4-1ubuntu3.2"},{"binary_version":"6.0.4-1ubuntu3.2","binary_name":"libstrongswan"},{"binary_name":"libstrongswan-extra-plugins","binary_version":"6.0.4-1ubuntu3.2"},{"binary_name":"libstrongswan-standard-plugins","binary_version":"6.0.4-1ubuntu3.2"},{"binary_name":"strongswan","binary_version":"6.0.4-1ubuntu3.2"},{"binary_name":"strongswan-charon","binary_version":"6.0.4-1ubuntu3.2"},{"binary_name":"strongswan-libcharon","binary_version":"6.0.4-1ubuntu3.2"},{"binary_version":"6.0.4-1ubuntu3.2","binary_name":"strongswan-nm"},{"binary_version":"6.0.4-1ubuntu3.2","binary_name":"strongswan-pki"},{"binary_name":"strongswan-starter","binary_version":"6.0.4-1ubuntu3.2"},{"binary_name":"strongswan-swanctl","binary_version":"6.0.4-1ubuntu3.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78133.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}