CVE-2026-3888

High CVSS: 7.8

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.

Vendor

Product

CWE

CWE-268

Yayın Tarihi

2026-03-17 14:16:17

Güncelleme

2026-03-18 04:17:30

Source Identifier

security@ubuntu.com

KEV Date Added

Kategoriler

CWE-268 HIGH 2026

Referanslar

https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root https://cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txt https://discourse.ubuntu.com/t/snapd-local-privilege-escalation-cve-2026-3888 https://ubuntu.com/security/CVE-2026-3888 https://ubuntu.com/security/notices/USN-8102-1 http://www.openwall.com/lists/oss-security/2026/03/18/1