{"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"}, "x_gcve": [{"vulnId": "CVE-2026-8933", "recordType": "advisory"}]}, "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"}}]}, "vulnerability-lookup:meta": {"epss": {"cve": "CVE-2026-8933", "date": "2026-10-05", "epss": "0.00178", "percentile": "0.06634"}, "nvd": "{\"cve\":{\"id\":\"CVE-2026-8933\",\"sourceIdentifier\":\"security@ubuntu.com\",\"published\":\"2026-07-21T15:16:39.563\",\"lastModified\":\"2026-07-22T19:17:14.773\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"security@ubuntu.com\",\"affectedData\":[{\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://github.com/canonical\",\"packageName\":\"snapd\",\"repo\":\"https://github.com/canonical/snapd/\",\"versions\":[{\"version\":\"2.75.0\",\"lessThan\":\"2.76.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Canonical\",\"product\":\"Ubuntu 26.04 LTS\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://launchpad.net/ubuntu/resolute\",\"packageName\":\"snapd\",\"platforms\":[\"Linux\"],\"repo\":\"https://launchpad.net/ubuntu/+source/snapd\",\"versions\":[{\"version\":\"2.76+ubuntu26.04.3\",\"versionType\":\"dpkg\",\"status\":\"unaffected\"}]},{\"vendor\":\"Canonical\",\"product\":\"Ubuntu 24.04 LTS\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://launchpad.net/ubuntu/noble\",\"packageName\":\"snapd\",\"platforms\":[\"Linux\"],\"repo\":\"https://launchpad.net/ubuntu/+source/snapd\",\"versions\":[{\"version\":\"2.76+ubuntu24.04.1\",\"versionType\":\"dpkg\",\"status\":\"unaffected\"}]},{\"vendor\":\"Canonical\",\"product\":\"Ubuntu 22.04 LTS\",\"defaultStatus\":\"affected\",\"collectionURL\":\"https://launchpad.net/ubuntu/jammy\",\"packageName\":\"snapd\",\"platforms\":[\"Linux\"],\"repo\":\"https://launchpad.net/ubuntu/+source/snapd\",\"versions\":[{\"version\":\"2.76+ubuntu22.04.1\",\"versionType\":\"dpkg\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@ubuntu.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-07-22T18:15:11.199548Z\",\"id\":\"CVE-2026-8933\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security@ubuntu.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-250\"}]}],\"references\":[{\"url\":\"https://ubuntu.com/security/CVE-2026-8933\",\"source\":\"security@ubuntu.com\"}]}}", "redhat_vex": {"current_release_date": "2026-08-24T12:07:04+00:00", "cve": "CVE-2026-8933", "id": "CVE-2026-8933", "initial_release_date": "2026-07-21T14:02:19.758000+00:00", "product_status:known_not_affected": "1", "source": "Red Hat CSAF VEX", "status": "final", "title": "snap-confine: snapd: snap-confine: Local Privilege Escalation via Insecure Privilege Boundary Initialization", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8933.json", "version": "3"}, "vulnrichment": {"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-8933\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-07-22T18:15:11.199548Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-07-22T18:15:11.839Z\"}}], \"cna\": {\"title\": \"snap-confine Local Privilege Escalation via Capabilities Misconfiguration or Flaw in Execution Environment Setup\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Qualys Security Advisory Team\"}], \"impacts\": [{\"capecId\": \"CAPEC-233\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-233 Privilege Escalation\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/canonical/snapd/\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.75.0\", \"lessThan\": \"2.76.1\", \"versionType\": \"semver\"}], \"packageName\": \"snapd\", \"collectionURL\": \"https://github.com/canonical\", \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://launchpad.net/ubuntu/+source/snapd\", \"vendor\": \"Canonical\", \"product\": \"Ubuntu 26.04 LTS\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"2.76+ubuntu26.04.3\", \"versionType\": \"dpkg\"}], \"platforms\": [\"Linux\"], \"packageName\": \"snapd\", \"collectionURL\": \"https://launchpad.net/ubuntu/resolute\", \"defaultStatus\": \"affected\"}, {\"repo\": \"https://launchpad.net/ubuntu/+source/snapd\", \"vendor\": \"Canonical\", \"product\": \"Ubuntu 24.04 LTS\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"2.76+ubuntu24.04.1\", \"versionType\": \"dpkg\"}], \"platforms\": [\"Linux\"], \"packageName\": \"snapd\", \"collectionURL\": \"https://launchpad.net/ubuntu/noble\", \"defaultStatus\": \"affected\"}, {\"repo\": \"https://launchpad.net/ubuntu/+source/snapd\", \"vendor\": \"Canonical\", \"product\": \"Ubuntu 22.04 LTS\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"2.76+ubuntu22.04.1\", \"versionType\": \"dpkg\"}], \"platforms\": [\"Linux\"], \"packageName\": \"snapd\", \"collectionURL\": \"https://launchpad.net/ubuntu/jammy\", \"defaultStatus\": \"affected\"}], \"datePublic\": \"2026-07-21T02:00:00.000Z\", \"references\": [{\"url\": \"https://ubuntu.com/security/CVE-2026-8933\", \"tags\": [\"vdb-entry\", \"issue-tracking\"]}], \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-250\", \"description\": \"CWE-250 Execution with unnecessary privileges\"}]}], \"providerMetadata\": {\"orgId\": \"cc1ad9ee-3454-478d-9317-d3e869d708bc\", \"shortName\": \"canonical\", \"dateUpdated\": \"2026-07-21T14:02:19.758Z\"}}}", "cveMetadata": "{\"cveId\": \"CVE-2026-8933\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-22T18:28:05.924Z\", \"dateReserved\": \"2026-05-19T10:37:03.649Z\", \"assignerOrgId\": \"cc1ad9ee-3454-478d-9317-d3e869d708bc\", \"datePublished\": \"2026-07-21T14:02:19.758Z\", \"assignerShortName\": \"canonical\"}", "dataType": "CVE_RECORD", "dataVersion": "5.2"}}}