CVE-2026-3888

{"id": "CVE-2026-3888", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security@ubuntu.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.1}]}, "published": "2026-03-17T14:16:17.410", "references": [{"url": "https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root", "source": "security@ubuntu.com"}, {"url": "https://cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txt", "source": "security@ubuntu.com"}, {"url": "https://discourse.ubuntu.com/t/snapd-local-privilege-escalation-cve-2026-3888", "source": "security@ubuntu.com"}, {"url": "https://ubuntu.com/security/CVE-2026-3888", "source": "security@ubuntu.com"}, {"url": "https://ubuntu.com/security/notices/USN-8102-1", "source": "security@ubuntu.com"}, {"url": "http://www.openwall.com/lists/oss-security/2026/03/18/1", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security@ubuntu.com", "description": [{"lang": "en", "value": "CWE-268"}]}], "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."}], "lastModified": "2026-03-18T04:17:30.720", "sourceIdentifier": "security@ubuntu.com"}