CVE-2026-104715 Cifs-utils: mount.cifs credential-file option injection allows local privilege boundary bypass
Local attackers can inject mount options via credential files to bypass permissions and execute code with root privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-104715?
CVE-2026-104715 is a high-severity command injection vulnerability in Red Hat Enterprise Linux 10, published on 16 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in cifs-utils. This flaw allows an unprivileged local user to achieve privilege escalation. When a privileged service mounts a Common Internet File System (CIFS) share using a user-controlled credentials file, input values are not properly sanitized before being assembled into mount options. A local attacker can exploit this vulnerability to inject unauthorized mount options, allowing them to bypass permission checks and execute files with administrative (root) privileges.
Weakness: CWE-88
Which versions are affected by CVE-2026-104715?
Linux distribution packages (17)
cifs-utils SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Micro 5.3 | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Micro 5.4 | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Micro 5.5 | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Module for Basesystem 15 SP7 | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Server 12 SP5-LTSS | All versions | 6.9-13.32.2 |
cifs-utils SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Server 15 SP5-LTSS | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Server 15 SP6-LTSS | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 | All versions | 6.9-13.32.2 |
cifs-utils SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | All versions | 6.15-150400.3.27.1 |
cifs-utils SUSE:Linux Micro 6.0 | All versions | 7.0-159998.1.1 |
How do I fix CVE-2026-104715?
Apply the vendor's patch.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-104715 being exploited?
There is no known exploitation of CVE-2026-104715 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as ALPINE-CVE-2026-104715, AZL-109782, CLSA-2026-1792790974, DEBIAN-CVE-2026-104715, GHSA-pvh7-9hhh-pfhr, MGASA-2026-0556 and 5 more.