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VulnerabilityPublished Updated

CVE-2026-104715: cifs-utils

Affects cifs-utilsSource GCVE Database

0
Authoritative record:CVE-2026-104715· High 7.8

Not known to be exploited · CVSS 7.8 High · fixed in 2:6.14-1ubuntu0.7 : patch cifs-utils soon.

Data as of 28 Oct 2026, 22:31 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 2:6.14-1ubuntu0.7, 2:7.0-2ubuntu0.6, 2:7.4-1ubuntu3.1 +1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Ubuntu 26.10cifs-utilspkg:deb/ubuntu/cifs-utils?arch=source&distro=stonkingOther threatsAffected
  • <2:7.4-1ubuntu3.1
Fixed in
  • 2:7.4-1ubuntu3.1
Ubuntu 26.04 LTScifs-utilspkg:deb/ubuntu/cifs-utils?arch=source&distro=resoluteOther threatsAffected
  • <2:7.4-1ubuntu0.26.04.4
Fixed in
  • 2:7.4-1ubuntu0.26.04.4
Ubuntu 24.04 LTScifs-utilspkg:deb/ubuntu/cifs-utils?arch=source&distro=nobleOther threatsAffected
  • <2:7.0-2ubuntu0.6
Fixed in
  • 2:7.0-2ubuntu0.6
Ubuntu 22.04 LTScifs-utilspkg:deb/ubuntu/cifs-utils?arch=source&distro=jammyOther threatsAffected
  • <2:6.14-1ubuntu0.7
Fixed in
  • 2:6.14-1ubuntu0.7
Ubuntu 20.04 LTScifs-utilspkg:deb/ubuntu/cifs-utils?arch=source&distro=focalOther threatsAffected
  • 2:6.9-0ubuntu1 – 2:6.9-1ubuntu0.4
6 affected builds
Fixed in–
Ubuntu 18.04 LTScifs-utilspkg:deb/ubuntu/cifs-utils?arch=source&distro=bionicOther threatsAffected
  • 2:6.7-1 – 2:6.8-1ubuntu1.2
5 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

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.

References

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