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.

INFO

Published Date :

2026-03-17T14:02:08.475Z

Last Modified :

2026-03-18T08:59:07.522Z

Source :

canonical
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3888 vulnerability.

Vendors Products
Canonical
  • Ubuntu
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3888.

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

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact