CVE-2026-88838 — Busybox: busybox: non-root mount option filter bypass allows clearing fstab security restrictions
A flaw was found in BusyBox's mount utility. A non-root user can bypass mount security restrictions set in /etc/fstab by specifying clearing-mask options on the command line. Th…
Published: 2026-10-13 · CVSS: 5.5 · CVSS 3.1
A flaw was found in BusyBox's mount utility. A non-root user can bypass mount security restrictions set in /etc/fstab by specifying clearing-mask options on the command line. These options pass the non-root flag filter and are merged with fstab options as strings; when the combined options are re-parsed, clearing options can override nosuid, nodev, and noexec protections the administrator intended to enforce.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7