{"schemaVersion":3,"id":"USN-7696-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"libssh vulnerabilities\n\nRonald Crane discovered that libssh incorrectly handled certain base64\nconversions. An attacker could use this issue to cause libssh to crash,\nresulting in a denial of service, or possibly execute arbitrary code.\n(CVE-2025-4877)\n\nRonald Crane discovered that libssh incorrectly handled the\nprivatekey_from_file() function. An attacker could use this issue to cause\nlibssh to crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2025-4878)\n\nRonald Crane discovered that libssh incorrectly handled certain memory\noperations in the sftp server. An attacker could possibly use this issue\nto cause libssh to crash, resulting in a denial of service.\n(CVE-2025-5318)","dates":{"published":"2025-08-14T06:35:13.000Z","modified":"2026-10-20T10:45:42.027Z","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":"libssh","name":"libssh","label":"libssh","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/libssh","purlType":"deb","versions":[{"text":"< 0.6.3-4.3ubuntu0.6+esm2","noFixRecorded":false,"fixedIn":null},{"text":"< 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4","noFixRecorded":false,"fixedIn":null},{"text":"< 0.9.3-2ubuntu2.5+esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.6.3-4.3ubuntu0.6+esm2 | < 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm4 | < 0.9.3-2ubuntu2.5+esm1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-7696-1","label":"ubuntu.com/security/notices/USN-7696-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-4877","label":"ubuntu.com/security/CVE-2025-4877","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-4878","label":"ubuntu.com/security/CVE-2025-4878","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2025-5318","label":"ubuntu.com/security/CVE-2025-5318","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2025-4877","CVE-2025-4878","CVE-2025-5318"],"downstream":[],"duplicates":[],"related":["CVE-2025-4877","CVE-2025-4878","CVE-2025-5318"]},"timeline":[{"kind":"published","date":"2025-08-14T06:35:13.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-20T10:45:42.027Z","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":"2026-10-20T12:17:50.012Z","stale":false,"partial":false}}