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Fencer Intel
high 7.8

CVE-2026-104715 json

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

published 24d ago modified 5d ago also EUVD-2026-102803

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits
0
none known

Summary

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.

Patch / fix

  • cifs-utils Debian 13 2:7.4-1+deb13u1
  • cifs-utils Debian 14 2:7.9-1

debian advisories DEBIAN-CVE-2026-104715

  • cifs-utils Ubuntu 22.04 LTS 2:6.14-1ubuntu0.7
  • cifs-utils Ubuntu 24.04 LTS 2:7.0-2ubuntu0.6
  • cifs-utils Ubuntu 26.10 2:7.4-1ubuntu3.1
  • cifs-utils Ubuntu 26.04 LTS 2:7.4-1ubuntu0.26.04.4

ubuntu advisories UBUNTU-CVE-2026-104715

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cifs-utils SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 7.4-160000.3.1
  • cifs-utils Linux Micro 6.0 7.0-159998.1.1
  • cifs-utils SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +11 more 6.15-150400.3.27.1
  • cifs-utils SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 6.9-13.32.2

suse advisories SUSE-SU-2026:24435-1SUSE-SU-2026:24462-1SUSE-SU-2026:4897-1SUSE-SU-2026:24372-1SUSE-SU-2026:4819-1

  • cifs-utils openSUSE Leap 16.0 7.4-160000.3.1

opensuse advisories openSUSE-SU-2026:22170-1

  • cifs-utils Alpine 3.21 7.1-r1
  • cifs-utils Alpine 3.22 7.3-r1
  • cifs-utils Alpine 3.23 7.4-r1
  • cifs-utils Alpine 3.24 7.5-r1

alpine advisories ALPINE-CVE-2026-104715

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cifs-utils Azure Linux 3.0 7.9-1

azure linux advisories AZL-109782

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Is CVE-2026-104715 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-104715 updated cvss 7.8

cifs-utils: mount.cifs credential-file option injection allows local privilege boundary bypass

  • Red Hat Enterprise Linux 6 cifs-utils, cifs-utils 7.7-1.el10_2
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 cifs-utils 7.7-1.el10_2 Red Hat Enterprise Linux 8 cifs-utils, pam_cifscreds, cifs-utils 7.7-1.el10_2 Red Hat Enterprise Linux 9 cifs-utils, pam_cifscreds, cifs-utils 7.7-1.el10_2 Red Hat Enterprise Linux 10 cifs-utils 7.7-1.el10_2 Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9
    affected: no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
20d ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat OpenShift Container Platform 4
  • Red Hat Red Hat OpenShift Container Platform 5

Classification

Weakness
  • CWE-88 Improper Neutralization of Argument Delimiters in a Command

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.