Nfs-utils: rpc.mountd in the nfs-utils privilege escalation
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.5%
exploitation probability
0.5%top 61% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
Red Hat · Red Hat Ceph Storage 8Red Hat · Red Hat Enterprise Linux 10Red Hat · Red Hat Enterprise Linux 6Red Hat · Red Hat Enterprise Linux 7Red Hat · Red Hat Enterprise Linux 8Red Hat · Red Hat Enterprise Linux 9Red Hat · Red Hat Enterprise Linux 9.4 Extended Update SupportRed Hat · Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat · Red Hat OpenShift Container Platform 4Red Hat · Red Hat OpenShift Container Platform 4.16Red Hat · Red Hat OpenShift Container Platform 4.17Red Hat · Red Hat OpenShift Container Platform 4.18Red Hat · Red Hat OpenShift Container Platform 4.19References
https://access.redhat.com/errata/RHSA-2026:3938https://access.redhat.com/errata/RHSA-2026:3939https://access.redhat.com/errata/RHSA-2026:3940https://access.redhat.com/errata/RHSA-2026:3941https://access.redhat.com/errata/RHSA-2026:3942https://access.redhat.com/errata/RHSA-2026:5127https://access.redhat.com/errata/RHSA-2026:5606https://access.redhat.com/errata/RHSA-2026:5867https://access.redhat.com/errata/RHSA-2026:5873https://access.redhat.com/errata/RHSA-2026:5877https://access.redhat.com/security/cve/CVE-2025-12801https://bugzilla.redhat.com/show_bug.cgi?id=2413081