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CVE-2026-3888

HIGH

7.8

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.17.8

SeveridadHIGH

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

Vector de ataqueLOCAL

ComplejidadHIGH

Privilegios requeridosLOW

Interaccion usuarioNONE

Publicado3/17/2026

Ultima modificacion3/18/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-268

Referencias

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)

Correlaciones IOC

Sin correlaciones registradas

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