CVE Database›Document archive›CVE-2021-41133

CVE-2021-41133

flatpak: Sandbox bypass via recent VFS-manipulating syscalls

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Severity

Important

Red Hat Product Security

8.8

CVSS 3.1

Review impact separately from score.

Published · October 8, 2021

Updated · November 22, 2025

Description

A flaw was found in the flatpak package. It is susceptible to a software flaw that can deceive portals and other host-OS services into treating the flatpak app as an ordinary, non-sandboxed host-OS process. This flaw allows the escalation of privileges that the corresponding services presume the flatpak app has. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 8.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CWE-20 · Improper Input Validation