CVE-2026-3888 HIGH

CVE-2026-3888: Local Privilege Escalation in snapd

Weakness CWE-268
Published March 17, 2026
Last update March 18, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 17, 2026 CVE published
March 18, 2026 Record updated