{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8933","assignerOrgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","state":"PUBLISHED","assignerShortName":"canonical","dateReserved":"2026-05-19T10:37:03.649Z","datePublished":"2026-07-21T14:02:19.758Z","dateUpdated":"2026-07-22T18:28:05.924Z"},"containers":{"cna":{"title":"snap-confine Local Privilege Escalation via Capabilities Misconfiguration or Flaw in Execution Environment Setup","datePublic":"2026-07-21T02:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-250","description":"CWE-250 Execution with unnecessary privileges","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-233","descriptions":[{"lang":"en","value":"CAPEC-233 Privilege Escalation"}]}],"affected":[{"collectionURL":"https://github.com/canonical","packageName":"snapd","repo":"https://github.com/canonical/snapd/","versions":[{"status":"affected","version":"2.75.0","lessThan":"2.76.1","versionType":"semver"}],"defaultStatus":"unaffected"},{"vendor":"Canonical","product":"Ubuntu 26.04 LTS","platforms":["Linux"],"collectionURL":"https://launchpad.net/ubuntu/resolute","packageName":"snapd","repo":"https://launchpad.net/ubuntu/+source/snapd","versions":[{"status":"unaffected","version":"2.76+ubuntu26.04.3","versionType":"dpkg"}],"defaultStatus":"affected"},{"vendor":"Canonical","product":"Ubuntu 24.04 LTS","platforms":["Linux"],"collectionURL":"https://launchpad.net/ubuntu/noble","packageName":"snapd","repo":"https://launchpad.net/ubuntu/+source/snapd","versions":[{"status":"unaffected","version":"2.76+ubuntu24.04.1","versionType":"dpkg"}],"defaultStatus":"affected"},{"vendor":"Canonical","product":"Ubuntu 22.04 LTS","platforms":["Linux"],"collectionURL":"https://launchpad.net/ubuntu/jammy","packageName":"snapd","repo":"https://launchpad.net/ubuntu/+source/snapd","versions":[{"status":"unaffected","version":"2.76+ubuntu22.04.1","versionType":"dpkg"}],"defaultStatus":"affected"}],"descriptions":[{"lang":"en","value":"A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct the secure execution environment for snap applications. This vulnerability uniquely affects versions of snap-confine configured with set-capabilities (rather than standard set-uid-root installations).\nDue to a flaw in how privilege boundaries or security sandboxes are initialized when the binary runs under limited ambient capabilities, a local, unprivileged attacker can exploit this behavior to bypass intended restrictions and execute arbitrary code. Successful exploitation allows the local user to elevate their privileges to full root authority."}],"references":[{"url":"https://ubuntu.com/security/CVE-2026-8933","tags":["vdb-entry","issue-tracking"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.8,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}}],"credits":[{"lang":"en","value":"Qualys Security Advisory Team","type":"finder"}],"source":{"discovery":"EXTERNAL"},"providerMetadata":{"orgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","shortName":"canonical","dateUpdated":"2026-07-21T14:02:19.758Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-22T18:15:11.199548Z","id":"CVE-2026-8933","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-22T18:28:05.924Z"}}]}}