Unrated severityNVD Advisory· Published Mar 17, 2026· Updated Mar 18, 2026
Local Privilege Escalation in snapd
CVE-2026-3888
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.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- discourse.ubuntu.com/t/snapd-local-privilege-escalation-cve-2026-3888mitretechnical-descriptionvendor-advisory
- ubuntu.com/security/notices/USN-8102-1mitrevendor-advisory
- blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-rootmitretechnical-descriptionmedia-coverage
- cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txtmitretechnical-descriptionmedia-coverage
- ubuntu.com/security/CVE-2026-3888mitrevdb-entryissue-tracking
News mentions
1- New Ubuntu Flaw Enables Local Attackers to Gain Root AccessInfosecurity Magazine · Mar 18, 2026