{"schemaVersion":3,"id":"USN-8196-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"strongswan vulnerabilities\n\nHaruto Kimura discovered that strongSwan incorrectly handled the\nsupported_versions extension in TLS. A remote attacker could possibly use\nthis issue to cause strongSwan to stop responding, resulting in a denial\nof service. (CVE-2026-35328)\n\nHaruto Kimura discovered that strongSwan incorrectly handled certain\nencrypted PKCS#7 containers. A remote attacker could possibly use this\nissue to cause strongSwan to crash, resulting in a denial of service.\n(CVE-2026-35329)\n\nLukas Johannes Moeller discovered that strongSwan incorrectly handled\ncertain EAP-SIM/AKA attributes. A remote attacker could use this issue to\ncause strongSwan to stop responding, resulting in a denial of service, or\npossibly execute arbitrary code. (CVE-2026-35330)\n\nHaruto Kimura discovered that strongSwan incorrectly handled processing of\nX.509 name constraints. A remote attacker could possibly use this issue to\nbypass excluded name constraints. (CVE-2026-35331)\n\nHaruto Kimura discovered that strongSwan incorrectly processed ECDH public\nvalues. A remote attacker could possibly use this issue to cause strongSwan\nto crash, resulting in a denial of service. (CVE-2026-35332)\n\nLukas Johannes Moeller discovered that strongSwan incorrectly handled\ncertain RADIUS attributes. A remote attacker could possibly use this issue\nto cause strongSwan to crash, resulting in a denial of service.\n(CVE-2026-35333)\n\nRyo Shimada discovered that strongSwan incorrectly handled RSA decryption.\nA remote attacker could possibly use this issue to cause strongSwan to\ncrash, resulting in a denial of service. (CVE-2026-35334)","dates":{"published":"2026-04-22T12:46:23.000Z","modified":"2026-04-27T19:02:35.850Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"strongswan","name":"strongswan","label":"strongswan","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/strongswan","purlType":"deb","versions":[{"text":"< 5.9.5-2ubuntu2.6","noFixRecorded":false,"fixedIn":null},{"text":"< 5.9.13-2ubuntu4.24.04.3","noFixRecorded":false,"fixedIn":null},{"text":"< 6.0.1-6ubuntu4.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.9.5-2ubuntu2.6 | < 5.9.13-2ubuntu4.24.04.3 | < 6.0.1-6ubuntu4.3","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8196-1","label":"ubuntu.com/security/notices/USN-8196-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-35328","label":"ubuntu.com/security/CVE-2026-35328","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35329","label":"ubuntu.com/security/CVE-2026-35329","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35330","label":"ubuntu.com/security/CVE-2026-35330","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35331","label":"ubuntu.com/security/CVE-2026-35331","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35332","label":"ubuntu.com/security/CVE-2026-35332","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35333","label":"ubuntu.com/security/CVE-2026-35333","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-35334","label":"ubuntu.com/security/CVE-2026-35334","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2026-35328","CVE-2026-35329","CVE-2026-35330","CVE-2026-35331","CVE-2026-35332","CVE-2026-35333","CVE-2026-35334"],"downstream":[],"duplicates":[],"related":["CVE-2026-35328","CVE-2026-35329","CVE-2026-35330","CVE-2026-35331","CVE-2026-35332","CVE-2026-35333","CVE-2026-35334"]},"timeline":[{"kind":"published","date":"2026-04-22T12:46:23.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-27T19:02:35.850Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T02:26:54.791Z","stale":false,"partial":false}}