{"schemaVersion":3,"id":"USN-4934-2","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"exim4 vulnerabilities\n\nUSN-4934-1 fixed several vulnerabilities in Exim. This update provides\nthe corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.\nCVE-2020-28026 only affected Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that Exim contained multiple security issues. An attacker\n could use these issues to cause a denial of service, execute arbitrary\n code remotely, obtain sensitive information, or escalate local privileges.","dates":{"published":"2021-05-06T11:23:36.000Z","modified":"2026-06-29T13:48:55.383Z","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":"exim4","name":"exim4","label":"exim4","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/exim4","purlType":"deb","versions":[{"text":"< 4.82-3ubuntu2.4+esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 4.86.2-2ubuntu2.6+esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.82-3ubuntu2.4+esm3 | < 4.86.2-2ubuntu2.6+esm1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-4934-2","label":"ubuntu.com/security/notices/USN-4934-2","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-28007","label":"ubuntu.com/security/CVE-2020-28007","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28008","label":"ubuntu.com/security/CVE-2020-28008","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28009","label":"ubuntu.com/security/CVE-2020-28009","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28011","label":"ubuntu.com/security/CVE-2020-28011","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28012","label":"ubuntu.com/security/CVE-2020-28012","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28013","label":"ubuntu.com/security/CVE-2020-28013","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28014","label":"ubuntu.com/security/CVE-2020-28014","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28015","label":"ubuntu.com/security/CVE-2020-28015","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28016","label":"ubuntu.com/security/CVE-2020-28016","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28017","label":"ubuntu.com/security/CVE-2020-28017","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28020","label":"ubuntu.com/security/CVE-2020-28020","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28022","label":"ubuntu.com/security/CVE-2020-28022","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28024","label":"ubuntu.com/security/CVE-2020-28024","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28025","label":"ubuntu.com/security/CVE-2020-28025","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-28026","label":"ubuntu.com/security/CVE-2020-28026","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2021-27216","label":"ubuntu.com/security/CVE-2021-27216","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-28007","CVE-2020-28008","CVE-2020-28009","CVE-2020-28011","CVE-2020-28012","CVE-2020-28013","CVE-2020-28014","CVE-2020-28015","CVE-2020-28017","CVE-2020-28020","CVE-2020-28022","CVE-2020-28024","CVE-2020-28025","CVE-2020-28026","CVE-2021-27216"],"downstream":[],"duplicates":[],"related":["CVE-2020-28007","CVE-2020-28008","CVE-2020-28009","CVE-2020-28011","CVE-2020-28012","CVE-2020-28013","CVE-2020-28014","CVE-2020-28015","CVE-2020-28017","CVE-2020-28020","CVE-2020-28022","CVE-2020-28024","CVE-2020-28025","CVE-2020-28026","CVE-2021-27216"]},"timeline":[{"kind":"published","date":"2021-05-06T11:23:36.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-29T13:48:55.383Z","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":"2026-10-20T04:52:49.134Z","stale":false,"partial":false}}