Name: CVE-2026-3888: Privilege Chaining
Creator: Rapid7
Published: 2026-03-17T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-3888, CWE-268, Metasploit Module, CVSS 7.8, EPSS 0.00475

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.

CVSS Details

CVSS 3.1 Base Score: 7.8
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade snapd	Mar 23, 2026	Mar 23, 2026
Ubuntu	—	Upgrade snapdUpgrade snapd (Ubuntu Pro)	Mar 18, 2026	Mar 17, 2026

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CVSS Details

Covered by Rapid7

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