# CVE-2026-104715: Cifs-utils: mount.cifs credential-file option injection allows local privilege boundary bypass

CVE-2026-104715 is fixed in 7 products on 1 platform, first by DEBIAN-CVE-2026-104715, released October 16, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-104715
- Priority: High
- CVSS: 7.8 (Important)
- EPSS: 0.0027
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 15, 2026
- Weakness: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-104715

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cifs-utils Debian 13.5 (trixie) | 2:7.4-1+deb13u1 | [DEBIAN-CVE-2026-104715](https://patchblox.com/security/data/fix/linux/debian-cve-2026-104715.md) | Oct 16, 2026 |
| Linux | cifs-utils Debian 14 | 2:7.9-1 | [DEBIAN-CVE-2026-104715](https://patchblox.com/security/data/fix/linux/debian-cve-2026-104715.md) | Oct 16, 2026 |
| Linux | cifs-utils Ubuntu 22.04.1 LTS (jammy) | 2:6.14-1ubuntu0.7 | [cifs-utils 2:6.14-1ubuntu0.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-cifs-utils-2-6.14-1ubuntu0.7.md) | Oct 20, 2026 |
| Linux | cifs-utils Ubuntu 24.04.5 LTS (noble) | 2:7.0-2ubuntu0.6 | [cifs-utils 2:7.0-2ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-cifs-utils-2-7.0-2ubuntu0.6.md) | Oct 20, 2026 |
| Linux | cifs-utils Ubuntu 26.04.1 LTS (resolute) | 2:7.4-1ubuntu0.26.04.4 | [cifs-utils 2:7.4-1ubuntu0.26.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-cifs-utils-2-7.4-1ubuntu0.26.04.4.md) | Nov 7, 2026 |
| Linux | cifs-utils amzn 2023 | 7.7-145.amzn2023.0.1 | [ALAS2023-2026-3291](https://patchblox.com/security/data/fix/linux/alas2023-2026-3291.md) | Nov 7, 2026 |
| Linux | cifs-utils opensuse-leap 16.0 | 7.4-160000.3.1 | [OPENSUSE-SU-2026:22170-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22170-1.md) | Nov 7, 2026 |
| Linux | cifs-utils sles 15.6 | 6.15-150400.3.27.1 | [SUSE-SU-2026:4819-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4819-1.md) | Nov 7, 2026 |
| Linux | cifs-utils sles 15.7 | 6.15-150400.3.27.1 | [SUSE-SU-2026:4819-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4819-1.md) | Nov 7, 2026 |
| Linux | cifs-utils sles 16.0 | 7.4-160000.3.1 | [SUSE-SU-2026:24462-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24462-1.md) | Nov 7, 2026 |
| Linux | cifs-utils-debuginfo amzn 2023 | 7.7-145.amzn2023.0.1 | [ALAS2023-2026-3291](https://patchblox.com/security/data/fix/linux/alas2023-2026-3291.md) | Nov 7, 2026 |
| Linux | cifs-utils-debugsource amzn 2023 | 7.7-145.amzn2023.0.1 | [ALAS2023-2026-3291](https://patchblox.com/security/data/fix/linux/alas2023-2026-3291.md) | Nov 7, 2026 |
| Linux | cifs-utils-devel amzn 2023 | 7.7-145.amzn2023.0.1 | [ALAS2023-2026-3291](https://patchblox.com/security/data/fix/linux/alas2023-2026-3291.md) | Nov 7, 2026 |
| Linux | cifs-utils-info amzn 2023 | 7.7-145.amzn2023.0.1 | [ALAS2023-2026-3291](https://patchblox.com/security/data/fix/linux/alas2023-2026-3291.md) | Nov 7, 2026 |
| Linux | pam_cifscreds amzn 2023 | 7.7-145.amzn2023.0.1 | [ALAS2023-2026-3291](https://patchblox.com/security/data/fix/linux/alas2023-2026-3291.md) | Nov 7, 2026 |
| Linux | pam_cifscreds-debuginfo amzn 2023 | 7.7-145.amzn2023.0.1 | [ALAS2023-2026-3291](https://patchblox.com/security/data/fix/linux/alas2023-2026-3291.md) | Nov 7, 2026 |

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Data as of 2026-11-10T01:44:33Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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