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CVE-2026-3888

HIGH

7.8

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.

Details CVE

Score CVSS v3.17.8

SeveriteHIGH

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

Vecteur d'attaqueLOCAL

ComplexiteHIGH

Privileges requisLOW

Interaction utilisateurNONE

Publie3/17/2026

Derniere modification3/18/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-268

References

https://blog.qualys.com/vulnerabilities-threat-research/2026/03/17/cve-2026-3888-important-snap-flaw-enables-local-privilege-escalation-to-root(security@ubuntu.com)

https://cdn2.qualys.com/advisory/2026/03/17/snap-confine-systemd-tmpfiles.txt(security@ubuntu.com)

https://discourse.ubuntu.com/t/snapd-local-privilege-escalation-cve-2026-3888(security@ubuntu.com)

https://ubuntu.com/security/CVE-2026-3888(security@ubuntu.com)

https://ubuntu.com/security/notices/USN-8102-1(security@ubuntu.com)

http://www.openwall.com/lists/oss-security/2026/03/18/1(af854a3a-2127-422b-91ae-364da2661108)

Correlations IOC

Aucune correlation enregistree

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