{"api_version":"1","generated_at":"2026-06-10T19:47:48+00:00","cve":"CVE-2026-3888","urls":{"html":"https://cve.report/CVE-2026-3888","api":"https://cve.report/api/cve/CVE-2026-3888.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-3888","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-3888"},"summary":{"title":"Local Privilege Escalation in snapd","description":"Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is configured to automatically clean up this directory. This issue affects Ubuntu 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, and 24.04 LTS.","state":"PUBLISHED","assigner":"canonical","published_at":"2026-03-17 14:16:17","updated_at":"2026-06-04 14:43:01"},"problem_types":["CWE-268","CWE-268 CWE-268 Privilege chaining"],"metrics":[{"version":"3.1","source":"security@ubuntu.com","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","data":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://ubuntu.com/security/notices/USN-8102-1","name":"https://ubuntu.com/security/notices/USN-8102-1","refsource":"security@ubuntu.com","tags":["Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"http://www.openwall.com/lists/oss-security/2026/03/18/1","name":"http://www.openwall.com/lists/oss-security/2026/03/18/1","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txt","name":"https://cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txt","refsource":"security@ubuntu.com","tags":["Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root","name":"https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root","refsource":"security@ubuntu.com","tags":["Mitigation","Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://discourse.ubuntu.com/t/snapd-local-privilege-escalation-cve-2026-3888","name":"https://discourse.ubuntu.com/t/snapd-local-privilege-escalation-cve-2026-3888","refsource":"security@ubuntu.com","tags":["Mitigation","Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://ubuntu.com/security/CVE-2026-3888","name":"https://ubuntu.com/security/CVE-2026-3888","refsource":"security@ubuntu.com","tags":["Third Party Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-3888","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3888","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Canonical","product":"Ubuntu 16.04 LTS","version":"unaffected 2.61.4ubuntu0.16.04.1+esm2 * dpkg","platforms":["Linux"]},{"source":"CNA","vendor":"Canonical","product":"Ubuntu 18.04 LTS","version":"unaffected 2.61.4ubuntu0.18.04.1+esm2 * dpkg","platforms":["Linux"]},{"source":"CNA","vendor":"Canonical","product":"Ubuntu 20.04 LTS","version":"unaffected 2.67.1+20.04ubuntu1~esm1 * dpkg","platforms":["Linux"]},{"source":"CNA","vendor":"Canonical","product":"Ubuntu 22.04 LTS","version":"unaffected 2.73+ubuntu22.04.1 * dpkg","platforms":["Linux"]},{"source":"CNA","vendor":"Canonical","product":"Ubuntu 24.04 LTS","version":"unaffected 2.73+ubuntu24.04.2 * dpkg","platforms":["Linux"]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Qualys Security Advisory Team","lang":"en"}],"nvd_cpes":[{"cve_year":"2026","cve_id":"3888","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"canonical","cpe5":"ubuntu_linux","cpe6":"16.04","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"lts","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"3888","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"canonical","cpe5":"ubuntu_linux","cpe6":"18.04","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"lts","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"3888","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"canonical","cpe5":"ubuntu_linux","cpe6":"20.04","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"lts","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"3888","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"canonical","cpe5":"ubuntu_linux","cpe6":"22.04","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"lts","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"3888","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"canonical","cpe5":"ubuntu_linux","cpe6":"24.04","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"lts","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"3888","cve":"CVE-2026-3888","epss":"0.000090000","percentile":"0.010810000","score_date":"2026-06-08","updated_at":"2026-06-09 00:12:52"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-3888","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-03-17T00:00:00+00:00","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-03-18T03:55:45.787Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"},{"providerMetadata":{"dateUpdated":"2026-03-18T03:02:10.640Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"url":"http://www.openwall.com/lists/oss-security/2026/03/18/1"}],"title":"CVE Program Container"}],"cna":{"affected":[{"collectionURL":"https://github.com/canonical","defaultStatus":"unaffected","packageName":"snapd","repo":"https://github.com/canonical/snapd/","versions":[{"lessThan":"2.75.1","status":"affected","version":"0","versionType":"semver"}]},{"collectionURL":"https://launchpad.net/ubuntu/xenial","defaultStatus":"affected","packageName":"snapd","platforms":["Linux"],"product":"Ubuntu 16.04 LTS","repo":"https://launchpad.net/ubuntu/+source/snapd","vendor":"Canonical","versions":[{"lessThan":"*","status":"unaffected","version":"2.61.4ubuntu0.16.04.1+esm2","versionType":"dpkg"}]},{"collectionURL":"https://launchpad.net/ubuntu/bionic","defaultStatus":"affected","packageName":"snapd","platforms":["Linux"],"product":"Ubuntu 18.04 LTS","repo":"https://launchpad.net/ubuntu/+source/snapd","vendor":"Canonical","versions":[{"lessThan":"*","status":"unaffected","version":"2.61.4ubuntu0.18.04.1+esm2","versionType":"dpkg"}]},{"collectionURL":"https://launchpad.net/ubuntu/focal","defaultStatus":"affected","packageName":"snapd","platforms":["Linux"],"product":"Ubuntu 20.04 LTS","repo":"https://launchpad.net/ubuntu/+source/snapd","vendor":"Canonical","versions":[{"lessThan":"*","status":"unaffected","version":"2.67.1+20.04ubuntu1~esm1","versionType":"dpkg"}]},{"collectionURL":"https://launchpad.net/ubuntu/jammy","defaultStatus":"affected","packageName":"snapd","platforms":["Linux"],"product":"Ubuntu 22.04 LTS","repo":"https://launchpad.net/ubuntu/+source/snapd","vendor":"Canonical","versions":[{"lessThan":"*","status":"unaffected","version":"2.73+ubuntu22.04.1","versionType":"dpkg"}]},{"collectionURL":"https://launchpad.net/ubuntu/noble","defaultStatus":"affected","packageName":"snapd","platforms":["Linux"],"product":"Ubuntu 24.04 LTS","repo":"https://launchpad.net/ubuntu/+source/snapd","vendor":"Canonical","versions":[{"lessThan":"*","status":"unaffected","version":"2.73+ubuntu24.04.2","versionType":"dpkg"}]}],"credits":[{"lang":"en","type":"finder","value":"Qualys Security Advisory Team"}],"datePublic":"2026-03-17T14:00:00.000Z","descriptions":[{"lang":"en","value":"Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is configured to automatically clean up this directory. This issue affects Ubuntu 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, and 24.04 LTS."}],"impacts":[{"capecId":"CAPEC-233","descriptions":[{"lang":"en","value":"CAPEC-233 Privilege Escalation"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-268","description":"CWE-268 Privilege chaining","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-03-18T08:59:07.522Z","orgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","shortName":"canonical"},"references":[{"tags":["vdb-entry","issue-tracking"],"url":"https://ubuntu.com/security/CVE-2026-3888"},{"tags":["vendor-advisory"],"url":"https://ubuntu.com/security/notices/USN-8102-1"},{"tags":["technical-description","vendor-advisory"],"url":"https://discourse.ubuntu.com/t/snapd-local-privilege-escalation-cve-2026-3888"},{"tags":["technical-description","media-coverage"],"url":"https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root"},{"tags":["technical-description","media-coverage"],"url":"https://cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txt"}],"source":{"discovery":"EXTERNAL"},"title":"Local Privilege Escalation in snapd"}},"cveMetadata":{"assignerOrgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","assignerShortName":"canonical","cveId":"CVE-2026-3888","datePublished":"2026-03-17T14:02:08.475Z","dateReserved":"2026-03-10T16:03:08.583Z","dateUpdated":"2026-03-18T08:59:07.522Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-03-17 14:16:17","lastModifiedDate":"2026-06-04 14:43:01","problem_types":["CWE-268","CWE-268 CWE-268 Privilege chaining"],"metrics":{"cvssMetricV31":[{"source":"security@ubuntu.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.1,"impactScore":6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","matchCriteriaId":"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B"},{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","matchCriteriaId":"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D"},{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*","matchCriteriaId":"902B8056-9E37-443B-8905-8AA93E2447FB"},{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*","matchCriteriaId":"359012F1-2C63-415A-88B8-6726A87830DE"},{"vulnerable":true,"criteria":"cpe:2.3:o:canonical:ubuntu_linux:24.04:*:*:*:lts:*:*:*","matchCriteriaId":"BF90B5A4-6E55-4369-B9D4-E7A061E797D2"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"3888","Ordinal":"1","Title":"Local Privilege Escalation in snapd","CVE":"CVE-2026-3888","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"3888","Ordinal":"1","NoteData":"Local privilege escalation in snapd on Linux allows local attackers to get root privilege by re-creating snap's private /tmp directory when systemd-tmpfiles is configured to automatically clean up this directory. This issue affects Ubuntu 16.04 LTS, 18.04 LTS, 20.04 LTS, 22.04 LTS, and 24.04 LTS.","Type":"Description","Title":"Local Privilege Escalation in snapd"}]}}}