{"schemaVersion":3,"id":"CVE-2017-7826","aliases":["UBUNTU-CVE-2017-7826","DEBIAN-CVE-2017-7826"],"status":"published","duplicateOf":null,"title":null,"description":"Memory safety bugs were reported in Firefox 56 and Firefox ESR 52.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.","dates":{"published":"2018-06-11T21:00:00.000Z","modified":"2024-08-05T16:12:28.321Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":10,"severity":"high","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.0/AV:N/AC:L/PR:N/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":10,"severity":"high","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Ubuntu","score":9.8,"severity":"critical","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":10,"impact":9.8,"computed":true},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Debian","score":9.8,"severity":"critical","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":10,"impact":9.8,"computed":true}]},"epss":{"probability":0.03335,"percentile":0.88484,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.034,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.03301},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.03013,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.03335,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.03335,"percentile":0.88484}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.03013,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.03301,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.03335,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.03335,"percentile":0.88484}]},"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":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer","description":"The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/119.html"}],"affected":[{"vendor":"canonical","product":"ubuntu_linux","name":"ubuntu linux","label":"ubuntu_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"17.10","noFixRecorded":false,"fixedIn":null},{"text":"18.04","noFixRecorded":false,"fixedIn":null}],"versionsText":"17.10 | 18.04","eol":{"isEol":true,"eolDate":"2018-07-19T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"17.10","label":"17.10 'Artful Aardvark'","eolFrom":"2018-07-19T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":"17.10"},"product":{"name":"ubuntu","label":"Ubuntu","category":"os"}},"hubHref":"/vendor/canonical/ubuntu_linux"},{"vendor":"debian","product":"firefox-esr","name":"firefox-esr","label":"firefox-esr","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/firefox-esr","purlType":"deb","versions":[{"text":"< 52.5.0esr-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 52.5.0esr-1","eol":null,"hubHref":null},{"vendor":"debian","product":"thunderbird","name":"thunderbird","label":"thunderbird","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/thunderbird","purlType":"deb","versions":[{"text":"< 1:52.5.0-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:52.5.0-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/firefox","purlType":"deb","versions":[{"text":"< 57.0+build4-0ubuntu0.14.04.4","noFixRecorded":false,"fixedIn":null},{"text":"< 57.0+build4-0ubuntu0.16.04.5","noFixRecorded":false,"fixedIn":null},{"text":"< 57.0.1+build2-0ubuntu1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 57.0+build4-0ubuntu0.14.04.4 | < 57.0+build4-0ubuntu0.16.04.5 | < 57.0.1+build2-0ubuntu1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs38","name":"mozjs38","label":"mozjs38","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs38","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs52","name":"mozjs52","label":"mozjs52","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs52","purlType":"deb","versions":[{"text":"< 52.8.1-0ubuntu0.18.04.1","noFixRecorded":false,"fixedIn":null},{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"< 52.8.1-0ubuntu0.18.04.1 | All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"thunderbird","name":"thunderbird","label":"thunderbird","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/thunderbird","purlType":"deb","versions":[{"text":"< 1:52.5.0+build1-0ubuntu0.14.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:52.5.0+build1-0ubuntu0.16.04.1","noFixRecorded":false,"fixedIn":null},{"text":"< 1:52.6.0+build1-0ubuntu1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:52.5.0+build1-0ubuntu0.14.04.1 | < 1:52.5.0+build1-0ubuntu0.16.04.1 | < 1:52.6.0+build1-0ubuntu1","eol":null,"hubHref":null},{"vendor":"debian","product":"debian_linux","name":"debian linux","label":"debian_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"7.0","noFixRecorded":false,"fixedIn":null},{"text":"8.0","noFixRecorded":false,"fixedIn":null},{"text":"9.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.0 | 8.0 | 9.0","eol":{"isEol":true,"eolDate":"2018-05-31T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"7","label":"7 (Wheezy)","eolFrom":"2018-05-31T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":"7.11"},"product":{"name":"debian","label":"Debian","category":"os"}},"hubHref":"/vendor/debian/debian_linux"},{"vendor":"mozilla","product":"firefox","name":"Firefox","label":"firefox","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 57","noFixRecorded":false,"fixedIn":null},{"text":"< 57.0","noFixRecorded":false,"fixedIn":null},{"text":"< 52.5.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 57 | < 57.0 | < 52.5.0","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"firefox","label":"Firefox","category":"app"}},"hubHref":"/vendor/mozilla/firefox"},{"vendor":"mozilla","product":"firefox_esr","name":"firefox esr","label":"firefox_esr","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 52.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 52.5","eol":null,"hubHref":"/vendor/mozilla/firefox_esr"},{"vendor":"mozilla","product":"thunderbird","name":"Thunderbird","label":"thunderbird","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 52.5","noFixRecorded":false,"fixedIn":null},{"text":"< 52.5.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 52.5 | < 52.5.0","eol":null,"hubHref":"/vendor/mozilla/thunderbird"},{"vendor":"redhat","product":"enterprise_linux_desktop","name":"enterprise linux desktop","label":"enterprise_linux_desktop","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"6.0","noFixRecorded":false,"fixedIn":null},{"text":"7.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"6.0 | 7.0","eol":null,"hubHref":"/vendor/redhat/enterprise_linux_desktop"},{"vendor":"redhat","product":"enterprise_linux_server","name":"enterprise linux server","label":"enterprise_linux_server","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"6.0","noFixRecorded":false,"fixedIn":null},{"text":"7.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"6.0 | 7.0","eol":null,"hubHref":"/vendor/redhat/enterprise_linux_server"},{"vendor":"redhat","product":"enterprise_linux_server_aus","name":"enterprise linux server aus","label":"enterprise_linux_server_aus","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"7.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.4","eol":null,"hubHref":"/vendor/redhat/enterprise_linux_server_aus"},{"vendor":"redhat","product":"enterprise_linux_server_eus","name":"enterprise linux server eus","label":"enterprise_linux_server_eus","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"7.4","noFixRecorded":false,"fixedIn":null},{"text":"7.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.4 | 7.5","eol":null,"hubHref":"/vendor/redhat/enterprise_linux_server_eus"},{"vendor":"redhat","product":"enterprise_linux_workstation","name":"enterprise linux workstation","label":"enterprise_linux_workstation","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"6.0","noFixRecorded":false,"fixedIn":null},{"text":"7.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"6.0 | 7.0","eol":null,"hubHref":"/vendor/redhat/enterprise_linux_workstation"}],"affectedCount":16,"eol":{"hasEol":true,"count":2},"references":[{"url":"https://lists.debian.org/debian-lts-announce/2017/12/msg00001.html","label":"lists.debian.org/debian-lts-announce/2017/12/msg00001.html","hostname":"lists.debian.org","tags":["Mailing List","X Refsource MLIST","Third Party Advisory"]},{"url":"https://www.debian.org/security/2017/dsa-4035","label":"www.debian.org/security/2017/dsa-4035","hostname":"www.debian.org","tags":["Vendor Advisory","X Refsource DEBIAN","Third Party Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2017-24/","label":"www.mozilla.org/security/advisories/mfsa2017-24/","hostname":"www.mozilla.org","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2017-25/","label":"www.mozilla.org/security/advisories/mfsa2017-25/","hostname":"www.mozilla.org","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/101832","label":"www.securityfocus.com/bid/101832","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Third Party Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2017-26/","label":"www.mozilla.org/security/advisories/mfsa2017-26/","hostname":"www.mozilla.org","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1394530%2C1369561%2C1411458%2C1400003%2C1395138%2C1408412%2C1393840%2C1400763%2C1339259%2C1394265%2C1407740%2C1407751%2C1408005%2C1406398%2C1387799%2C1261175%2C1400554%2C1375146%2C1397811%2C1404636%2C1401804","label":"bugzilla.mozilla.org/buglist.cgi","hostname":"bugzilla.mozilla.org","tags":["X Refsource CONFIRM","Issue Tracking","Permissions Required","Third Party Advisory"]},{"url":"http://www.securitytracker.com/id/1039803","label":"www.securitytracker.com/id/1039803","hostname":"www.securitytracker.com","tags":["VDB Entry","X Refsource SECTRACK","Third Party Advisory"]},{"url":"https://www.debian.org/security/2017/dsa-4061","label":"www.debian.org/security/2017/dsa-4061","hostname":"www.debian.org","tags":["Vendor Advisory","X Refsource DEBIAN","Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2017/11/msg00018.html","label":"lists.debian.org/debian-lts-announce/2017/11/msg00018.html","hostname":"lists.debian.org","tags":["Mailing List","X Refsource MLIST","Third Party Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2017:3247","label":"access.redhat.com/errata/RHSA-2017:3247","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","Third Party Advisory"]},{"url":"https://www.debian.org/security/2017/dsa-4075","label":"www.debian.org/security/2017/dsa-4075","hostname":"www.debian.org","tags":["Vendor Advisory","X Refsource DEBIAN","Third Party Advisory"]},{"url":"https://usn.ubuntu.com/3688-1/","label":"usn.ubuntu.com/3688-1/","hostname":"usn.ubuntu.com","tags":["Vendor Advisory","X Refsource UBUNTU","Third Party Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2017:3372","label":"access.redhat.com/errata/RHSA-2017:3372","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","Third Party Advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-7826","label":"ubuntu.com/security/CVE-2017-7826","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2017-24/","label":"www.mozilla.org/en-US/security/advisories/mfsa2017-24/","hostname":"www.mozilla.org","tags":["REPORT"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2017-25/","label":"www.mozilla.org/en-US/security/advisories/mfsa2017-25/","hostname":"www.mozilla.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-3477-1","label":"ubuntu.com/security/notices/USN-3477-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/notices/USN-3490-1","label":"ubuntu.com/security/notices/USN-3490-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/notices/USN-3688-1","label":"ubuntu.com/security/notices/USN-3688-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-7826","label":"www.cve.org/CVERecord?id=CVE-2017-7826","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-7826","label":"security-tracker.debian.org/tracker/CVE-2017-7826","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["DLA-1172-1","DLA-1199-1","DSA-4035-1","DSA-4061-1","DSA-4075-1","MGASA-2017-0418","MGASA-2017-0432","MGASA-2018-0018","OPENSUSE-SU-2017:3108-1","OPENSUSE-SU-2017:3110-1","OPENSUSE-SU-2024:10600-1","OPENSUSE-SU-2024:10601-1","OPENSUSE-SU-2024:14572-1","RHSA-2017:3247","RHSA-2017:3372","SUSE-SU-2017:3213-1","SUSE-SU-2017:3233-1","USN-3477-1","USN-3490-1","USN-3688-1"],"duplicates":[],"related":["OPENSUSE-SU-2017:3108-1","OPENSUSE-SU-2017:3110-1","OPENSUSE-SU-2024:10600-1","OPENSUSE-SU-2024:10601-1","OPENSUSE-SU-2024:14572-1","SUSE-SU-2017:3213-1","SUSE-SU-2017:3233-1","USN-3477-1","USN-3490-1","USN-3688-1"]},"timeline":[{"kind":"published","date":"2018-06-11T21:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T16:12:28.321Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T03:24:53.646Z","stale":false,"partial":false}}