PT-2026-61956 · Canonical · Ubuntu 22.04 Lts+2

CVE-2026-8933 · Publicado 2026-07-21 · Atualizado 2026-07-21

Mitre

CVSS v3.1

7.8

Alta

Vetor base

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Correção

Enumeração de Fraquezas

CWE-250

Identificadores relacionados

CVE-2026-8933

Produtos afetados

Ubuntu 22.04 Lts

Ubuntu 24.04 Lts

Ubuntu 26.04 Lts

Referências · 2

• https://ubuntu.com/security/CVE-2026-8933 · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2026-8933 · Nota de Segurança