{"id":"CVE-2026-78133","aliases":["AZL-101829","DEBIAN-CVE-2026-78133","EUVD-2026-75907","GHSA-wc93-h4m4-584v","SUSE-SU-2026:24199-1","UBUNTU-CVE-2026-78133","USN-8789-1","openSUSE-SU-2026:11749-1","openSUSE-SU-2026:22050-1"],"status":"published","title":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision...","description":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00466,"percentile":0.40753,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-416"],"published":"2026-09-07T12:00:00Z","modified":"2026-10-28T02:30:45Z","fixes":[{"ecosystem":"Debian:13","package":"strongswan","fixed_in":["6.0.1-6+deb13u7"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"strongswan","fixed_in":["6.1.0-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"strongswan","fixed_in":["6.0.4-1ubuntu3.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.9.14-11"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.1-6+deb13u7"}]}],"versions":["6.0.1-6","6.0.1-6+deb13u1","6.0.1-6+deb13u2","6.0.1-6+deb13u4","6.0.1-6+deb13u5","6.0.1-6+deb13u6"]},{"source":"osv","ecosystem":"Debian:14","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.0-1"}]}],"versions":["6.0.1-6","6.0.2-1","6.0.3-1","6.0.4-1","6.0.5-1","6.0.6-1","6.0.7-1"]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 16.0","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.6-160000.3.1"}]}],"bundled":11},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.6-160000.3.1"}]}],"bundled":11},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"strongswan","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"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.5-2ubuntu2.8"}]}],"versions":["5.9.1-1ubuntu3","5.9.1-1ubuntu3.1","5.9.4-1ubuntu1","5.9.4-1ubuntu2","5.9.4-1ubuntu3","5.9.4-1ubuntu4","5.9.5-2ubuntu1","5.9.5-2ubuntu2","5.9.5-2ubuntu2.1","5.9.5-2ubuntu2.2","5.9.5-2ubuntu2.3","5.9.5-2ubuntu2.4","5.9.5-2ubuntu2.5","5.9.5-2ubuntu2.6","5.9.5-2ubuntu2.7"],"bundled":11},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9.13-2ubuntu4.24.04.5"}]}],"versions":["5.9.11-1ubuntu1","5.9.11-1ubuntu2","5.9.12-1ubuntu1","5.9.13-2ubuntu1","5.9.13-2ubuntu3","5.9.13-2ubuntu4","5.9.13-2ubuntu4.24.04.1","5.9.13-2ubuntu4.24.04.2","5.9.13-2ubuntu4.24.04.3","5.9.13-2ubuntu4.24.04.4"],"bundled":11},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"strongswan","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"],"bundled":11},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.0-1.1"}]}],"bundled":9},{"source":"osv","ecosystem":"openSUSE:Leap 16.0","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.6-160000.3.1"}]}],"bundled":11}],"products":[{"vendor":"strongswan","product":"strongswan"}],"references":[{"url":"https://github.com/strongswan/strongswan/releases/tag/6.1.0","tags":["Patch","Release Notes","Vendor Advisory","web"]},{"url":"https://www.strongswan.org/blog/2026/09/07/strongswan-vulnerability-(cve-2026-78133).html","tags":["Mitigation","Vendor Advisory","article","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78133","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-wc93-h4m4-584v"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78133.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-78133","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202624199-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1276533","tags":["report"]},{"url":"https://bugzilla.suse.com/1276534","tags":["report"]},{"url":"https://bugzilla.suse.com/1276536","tags":["report"]},{"url":"https://bugzilla.suse.com/1276539","tags":["report"]},{"url":"https://bugzilla.suse.com/1276540","tags":["report"]},{"url":"https://bugzilla.suse.com/1276541","tags":["report"]},{"url":"https://bugzilla.suse.com/1276543","tags":["report"]},{"url":"https://bugzilla.suse.com/1276544","tags":["report"]},{"url":"https://bugzilla.suse.com/1276545","tags":["report"]},{"url":"https://bugzilla.suse.com/1276548","tags":["report"]},{"url":"https://bugzilla.suse.com/1276549","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78123","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78124","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78126","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78127","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78129","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78130","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78131","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78132","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78133","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78134","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-78135","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2026-78133","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-78133","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-8789-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-78123","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-78124","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-78126","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-78127","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-78129","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-78130","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-78131","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-78132","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-78134","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2026-78135","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-78133","description":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","status":"published","published":"2026-09-11T01:52:30.872Z","modified":"2026-09-11T16:54:19.406Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T13:34:48.658051Z"}],"euvd":[{"id":"EUVD-2026-75907","description":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","status":"published","published":"2026-09-11T01:52:30Z","modified":"2026-09-11T16:54:19Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:28:22.225258Z"}],"ghsa":[{"id":"GHSA-wc93-h4m4-584v","title":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision...","description":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","status":"published","published":"2026-09-11T03:30:22Z","modified":"2026-09-11T03:30:22Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:11:43.788148Z"}],"nvd":[{"id":"CVE-2026-78133","description":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","status":"published","published":"2026-09-11T02:18:34.757Z","modified":"2026-09-14T20:07:44.49Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:12:46.271848Z"}],"osv":[{"id":"CVE-2026-78133","description":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","status":"published","published":"2026-09-11T01:52:30.872Z","modified":"2026-10-28T02:30:45.331901698Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:45:17.44708Z"},{"id":"DEBIAN-CVE-2026-78133","description":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","status":"published","published":"2026-09-11T02:18:34.757Z","modified":"2026-10-01T03:03:41.98161248Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:46:03.502256Z"},{"id":"UBUNTU-CVE-2026-78133","description":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","status":"published","published":"2026-09-07T12:00:00Z","modified":"2026-09-21T21:38:23.815008925Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:57:18.015985Z"},{"id":"AZL-101829","title":"CVE-2026-78133 affecting package strongswan 5.9.14-11","description":"libcharon in strongSwan 6.0.0 through 6.0.7 has a use-after-free in IKEv2 rekeying collision handling.","status":"published","published":"2026-09-11T02:18:34Z","modified":"2026-09-28T05:39:54Z","updated_at":"2026-11-02T15:28:00.508704Z"},{"id":"openSUSE-SU-2026:11749-1","title":"strongswan-6.1.0-1.1 on GA media","description":"These are all security issues fixed in the strongswan-6.1.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-09-10T00:00:00Z","modified":"2026-09-11T18:23:08.957437945Z","updated_at":"2026-11-02T16:58:39.516824Z"},{"id":"openSUSE-SU-2026:22050-1","title":"Security update for strongswan","description":"This update for strongswan fixes the following issues:\n\n- CVE-2026-78123: Undefined Memory Access When Handling PKCS#7 Containers (bsc#1276533).\n- CVE-2026-78124: Memory Leak When Processing Certificates in PKCS#7 Containers (bsc#1276534).\n- CVE-2026-78126: NULL-Pointer Dereference When Handling AKA-Synchronization-Failure (bsc#1276536).\n- CVE-2026-78127: Memory Leak During Message Stringification (bsc#1276539).\n- CVE-2026-78129: Unbounded Iteration When Decrypting PKCS#7 Containers (bsc#1276540).\n- CVE-2026-78130: NULL-Pointer Dereference in Attribute Certificate Validation (bsc#1276541).\n- CVE-2026-78131: Memory Leaks When Parsing Attribute Certificates (bsc#1276543).\n- CVE-2026-78132: Infinite Loop When Parsing Attribute Certificates (bsc#1276544).\n- CVE-2026-78133: Use-After-Free During Multi-KE Rekey Collision (bsc#1276545).\n- CVE-2026-78134: Missing Inner EAP Method Authentication Details (bsc#1276548).\n- CVE-2026-78135: Creation of a Child SA Pre-Authentication (bsc#1276549).\n","status":"published","published":"2026-10-08T06:13:17Z","modified":"2026-10-19T17:23:10.655908225Z","updated_at":"2026-11-02T16:58:42.426393Z"},{"id":"SUSE-SU-2026:24199-1","title":"Security update for strongswan","description":"This update for strongswan fixes the following issues:\n\n- CVE-2026-78123: Undefined Memory Access When Handling PKCS#7 Containers (bsc#1276533).\n- CVE-2026-78124: Memory Leak When Processing Certificates in PKCS#7 Containers (bsc#1276534).\n- CVE-2026-78126: NULL-Pointer Dereference When Handling AKA-Synchronization-Failure (bsc#1276536).\n- CVE-2026-78127: Memory Leak During Message Stringification (bsc#1276539).\n- CVE-2026-78129: Unbounded Iteration When Decrypting PKCS#7 Containers (bsc#1276540).\n- CVE-2026-78130: NULL-Pointer Dereference in Attribute Certificate Validation (bsc#1276541).\n- CVE-2026-78131: Memory Leaks When Parsing Attribute Certificates (bsc#1276543).\n- CVE-2026-78132: Infinite Loop When Parsing Attribute Certificates (bsc#1276544).\n- CVE-2026-78133: Use-After-Free During Multi-KE Rekey Collision (bsc#1276545).\n- CVE-2026-78134: Missing Inner EAP Method Authentication Details (bsc#1276548).\n- CVE-2026-78135: Creation of a Child SA Pre-Authentication (bsc#1276549).\n","status":"published","published":"2026-10-08T06:14:36Z","modified":"2026-10-21T17:23:09.940676854Z","updated_at":"2026-11-02T15:54:04.519245Z"},{"id":"USN-8789-1","title":"strongswan vulnerabilities","description":"It was discovered that strongSwan incorrectly handled PKCS#7 containers\nin the openssl plugin. A remote attacker could possibly use this issue\nto cause strongSwan to crash, resulting in a denial of service.\n(CVE-2026-78123)\n\nIt was discovered that strongSwan incorrectly handled memory when\nenumerating certificates in PKCS#7 containers in the openssl plugin.\nA remote attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2026-78124)\n\nIt was discovered that strongSwan incorrectly handled\nAKA-Synchronization-Failure messages in the eap-aka plugin. A remote\nattacker could possibly use this issue to cause strongSwan to crash,\nresulting in a denial of service. (CVE-2026-78126)\n\nIt was discovered that strongSwan incorrectly handled memory when\nstringifying IKE messages. A remote attacker could possibly use this\nissue to obtain sensitive information. (CVE-2026-78127)\n\nIt was discovered that strongSwan incorrectly handled PKCS#5 decryption.\nA remote attacker could possibly use this issue to cause strongSwan to\nconsume excessive resources, leading to a denial of service.\n(CVE-2026-78129)\n\nIt was discovered that strongSwan incorrectly handled attribute\ncertificates in the x509 plugin when the issuer name was missing. A\nremote attacker could possibly use this issue to cause strongSwan to\ncrash, resulting in a denial of service. (CVE-2026-78130)\n\nIt was discovered that strongSwan incorrectly handled memory when\nparsing attribute certificates in the x509 plugin. A remote attacker\ncould possibly use this issue to obtain sensitive information.\n(CVE-2026-78131)\n\nIt was discovered that strongSwan incorrectly handled attribute\ncertificates containing ietfAttrSyntax values in the x509 plugin. A\nremote attacker could possibly use this issue to cause strongSwan to\nconsume excessive resources, leading to a denial of service.\n(CVE-2026-78132)\n\nIt was discovered that strongSwan incorrectly handled IKEv2 rekeying\ncollisions with multi-key exchange. A remote attacker could possibly\nuse this issue to execute arbitrary code. This issue only affected\nUbuntu 26.04 LTS. (CVE-2026-78133)\n\nIt was discovered that strongSwan incorrectly validated inner EAP\nmethod authentication details in the eap-ttls and eap-peap plugins.\nAn authenticated user could possibly use this issue to bypass\nauthentication. (CVE-2026-78134)\n\nIt was discovered that strongSwan incorrectly handled CREATE_CHILD_SA\nrequests on unestablished IKE_SAs. A remote attacker could possibly\nuse this issue to bypass authentication. (CVE-2026-78135)","status":"published","published":"2026-09-21T12:16:30Z","modified":"2026-09-21T21:42:46.894062531Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}