CVE-2026-88838
Medium
Description
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Microsoft Azl3 Busybox
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-693CWE-693
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft azl3_busybox_1.36.1-27 | No range specified | — |
| microsoft azl3_busybox_1.36.1-28 | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.