vulnerability
Ubuntu: (Multiple Advisories) (CVE-2026-3888): snapd vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:M/Au:S/C:C/I:C/A:C) | Mar 17, 2026 | Mar 18, 2026 | Apr 16, 2026 |
Severity
7
CVSS
(AV:L/AC:M/Au:S/C:C/I:C/A:C)
Published
Mar 17, 2026
Added
Mar 18, 2026
Modified
Apr 16, 2026
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.
Solutions
ubuntu-pro-upgrade-snapdubuntu-upgrade-snapd
References
- CVE-2026-3888
- https://attackerkb.com/topics/CVE-2026-3888
- CWE-268
- EUVD-EUVD-2026-12570
- UBUNTU-USN-8102-1
- UBUNTU-USN-8102-2
- https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-12570
- https://ubuntu.com/security/notices/USN-8102-1
- https://www.cve.org/CVERecord?id=CVE-2026-3888
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.