CVE-2025-12801

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 63/100
Published: 2026-03-04 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: None
A: None

Description

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.

References & Advisories (12)

https://access.redhat.com/errata/RHSA-2026:3938
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3939
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3940
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3941
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3942
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5127
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5606
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5867
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5873
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5877
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2413081
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.51%
Raw Score 0.005140
Percentile 44.4%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00514
2026-11-13
0.00514
2026-11-12
0.00514
2026-11-10
0.00514
2026-11-09
0.00514
2026-11-08
0.00514
2026-11-07
0.00514
2026-11-06
0.00514
2026-11-05
0.00514

Intelligence Sources

mitre ref →
nvd ref →