CVE-2026-88838: Busybox: busybox: non-root mount option filter bypass allows clearing fstab security restrictions

Overview

Severity

Medium (CVSS 5.5)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Oct

Released

2026-10-17

EPSS Score

0.11% (percentile: 1.3%)

Affected Products (1)

Other

• 21821-17084

Revision History

• 2026-10-17: Information published.