CVE-2026-8933highCWE-250

CVE-2026-8933: fallo de gravedad alta en snapd

snap-confine Local Privilege Escalation via Capabilities Misconfiguration or Flaw in Execution Environment Setup

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear Ubuntu+ Monitorear snapd

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

41Vexday Risk Score

Sin señal de explotación. Ella tiene prueba de concepto pública.

ssvc Attendcvss 7.8epss 0.3%
de la publicación al arma88 días
Publicada en NVD21 jul
1ª PoC+88d
A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct the secure execution environment for snap applications. This vulnerability uniquely affects versions of snap-confine configured with set-capabilities (rather than standard set-uid-root installations). Due to a flaw in how privilege boundaries or security sandboxes are initialized when the binary runs under limited ambient capabilities, a local, unprivileged attacker can exploit this behavior to bypass intended restrictions and execute arbitrary code. Successful exploitation allows the local user to elevate their privileges to full root authority.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Productos afectados
snapdCanonical · Ubuntu 22.04 LTSCanonical · Ubuntu 24.04 LTSCanonical · Ubuntu 26.04 LTS
PoCs públicas encontradas — 1
githubgithub.com/songzzzz/CVE-2026-8933★ 0
⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
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