{"schemaVersion":3,"id":"CVE-2016-9920","aliases":["MGASA-2016-0430","UBUNTU-CVE-2016-9920","DEBIAN-CVE-2016-9920","DLA-737-1"],"status":"published","duplicateOf":null,"title":null,"description":"steps/mail/sendmail.inc in Roundcube before 1.1.7 and 1.2.x before 1.2.3, when no SMTP server is configured and the sendmail program is enabled, does not properly restrict the use of custom envelope-from addresses on the sendmail command line, which allows remote authenticated users to execute arbitrary code via a modified HTTP request that sends a crafted e-mail message.","dates":{"published":"2016-12-08T18:00:00.000Z","modified":"2024-08-06T03:07:31.413Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":6,"severity":"medium","vector":"AV:N/AC:M/Au:S/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":4.1,"impact":9.8,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Debian","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":4.1,"impact":9.8,"computed":true}]},"epss":{"probability":0.056,"percentile":0.92835,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.056},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.04673,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.056,"percentile":0.92835}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.04673,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.056,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.056,"percentile":0.92835}]},"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":[{"id":"REF_C1630254403F7694","name":"Exploit Reference (blog.ripstech.com)","source":"reference","url":"https://blog.ripstech.com/2016/roundcube-command-execution-via-email/","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-284","name":"Improper Access Control","description":"The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.","type":"weakness","status":"Incomplete","abstraction":"Pillar","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/284.html"}],"affected":[{"vendor":"debian","product":"roundcube","name":"roundcube","label":"roundcube","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/roundcube","purlType":"deb","versions":[{"text":"< 1.2.3+dfsg.1-1","noFixRecorded":false,"fixedIn":null},{"text":"< 0.7.2-9+deb7u5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.2.3+dfsg.1-1 | < 0.7.2-9+deb7u5","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"roundcube","name":"roundcube","label":"roundcube","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/roundcube","purlType":"deb","versions":[{"text":"< 1.2~beta+dfsg.1-0ubuntu1+esm7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.2~beta+dfsg.1-0ubuntu1+esm7","eol":null,"hubHref":null},{"vendor":"mageia","product":"roundcubemail","name":"roundcubemail","label":"roundcubemail","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/roundcubemail","purlType":"rpm","versions":[{"text":"< 1.0.9-1.1.mga5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.9-1.1.mga5","eol":null,"hubHref":null},{"vendor":"roundcube","product":"webmail","name":"Webmail","label":"webmail","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 1.1.6","noFixRecorded":false,"fixedIn":null},{"text":"1.2.0","noFixRecorded":false,"fixedIn":null},{"text":"1.2.1","noFixRecorded":false,"fixedIn":null},{"text":"1.2.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 1.1.6 | 1.2.0 | 1.2.1 | 1.2.2","eol":{"isEol":true,"eolDate":"2021-10-18T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"1.2","label":"1.2","eolFrom":"2021-10-18T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":"1.2.13"},"product":{"name":"roundcube","label":"Roundcube Webmail","category":"server-app"}},"hubHref":"/vendor/roundcube/webmail"}],"affectedCount":4,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://blog.ripstech.com/2016/roundcube-command-execution-via-email/","label":"blog.ripstech.com/2016/roundcube-command-execution-via-email/","hostname":"blog.ripstech.com","tags":["X Refsource MISC","Exploit","Third Party Advisory","WEB","REPORT"]},{"url":"http://www.securityfocus.com/bid/94858","label":"www.securityfocus.com/bid/94858","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID"]},{"url":"http://www.openwall.com/lists/oss-security/2016/12/08/10","label":"www.openwall.com/lists/oss-security/2016/12/08/10","hostname":"www.openwall.com","tags":["Mailing List","X Refsource MLIST","Third Party Advisory","REPORT"]},{"url":"https://roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released","label":"roundcube.net/news/2016/11/28/updates-1.2.3-and-1.1.7-released","hostname":"roundcube.net","tags":["X Refsource CONFIRM","Release Notes","Vendor Advisory","REPORT"]},{"url":"https://security.gentoo.org/glsa/201612-44","label":"security.gentoo.org/glsa/201612-44","hostname":"security.gentoo.org","tags":["Vendor Advisory","X Refsource GENTOO"]},{"url":"https://advisories.mageia.org/MGASA-2016-0430.html","label":"advisories.mageia.org/MGASA-2016-0430.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=19920","label":"bugs.mageia.org/show_bug.cgi?id=19920","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"http://openwall.com/lists/oss-security/2016/12/08/17","label":"openwall.com/lists/oss-security/2016/12/08/17","hostname":"openwall.com","tags":["WEB"]},{"url":"https://ubuntu.com/security/CVE-2016-9920","label":"ubuntu.com/security/CVE-2016-9920","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-9920","label":"www.cve.org/CVERecord?id=CVE-2016-9920","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-8132-1","label":"ubuntu.com/security/notices/USN-8132-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-9920","label":"security-tracker.debian.org/tracker/CVE-2016-9920","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":["CVE-2017-1000204"],"related":["USN-8132-1"]},"timeline":[{"kind":"published","date":"2016-12-08T18:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-06T03:07:31.413Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":41,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T08:12:11.507Z","stale":false,"partial":false}}