CVE-2025-12801

A vulnerability was recently discovered in the rpc.mountd daemon in the nfs-utils package for Linux, that allows a NFSv3 client to escalate the privileges assigned to it in the /etc/exports file at mount time. In particular, it allows the client to access any subdirectory or subtree of an exported directory, regardless of the set file permissions, and regardless of any 'root_squash' or 'all_squash' attributes that would normally be expected to apply to that client.

What this means for your business

It affects Redhat Openshift Container Platform. It matters if your company, or a supplier that handles your data, runs it.
An attacker can use it remotely, over a network, with an ordinary user login, and without anyone at your company clicking anything.
FIRST's prediction model gives it a 0.5% chance of attack attempts being seen in the next 30 days, ranking above 39% of all known flaws.

What to do

1Check whether your company or your suppliers run Redhat Openshift Container Platform, and which version. The affected versions are listed further down this page.
2If you do, follow the vendor's guidance. No patch reference has been published yet.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

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Scoring

CVSS: 6.5 (v3.1)
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-279
Assigned by: secalert@redhat.com

Dates

Published: 2026-03-04
Last modified: 2026-09-01
Sources: NVD

Affected products

Redhat Openshift Container Platform4.0
Redhat Enterprise Linux6.0, 7.0, 8.0, 9.0, 10.0
Linux-Nfs Nfs-Utilsall versions

As listed in the NVD configuration data. Not a statement about your estate.