CVE-2026-3888

Published Mar 17, 2026

Last updated 5 days ago

CVSS high 7.8
Ubuntu

Overview

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.
Source
security@ubuntu.com
NVD status
Awaiting Analysis

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.8
Impact score
6
Exploitability score
1.1
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Severity
HIGH

Weaknesses

security@ubuntu.com
CWE-268

Social media

Hype score
Not currently trending

  1. Top 5 Trending CVEs: 1 - CVE-2026-3888 2 - CVE-2025-31277 3 - CVE-2025-55182 4 - CVE-2026-20643 5 - CVE-2026-32746 #cve #cvetrends #cveshield #cybersecurity https://t.co/4Fua3CAN6W

    @CVEShield

    19 Mar 2026

    155 Impressions

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    0 Likes

    1 Bookmark

    0 Replies

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References

Sources include official advisories and independent security research.