CVE-2025-12801: linux-nfs nfs-utils Incorrect Execution-Assigned Permissions
Vulnerability summary
CVE-2025-12801 is a medium (CVSS 6.5) Incorrect Execution-Assigned Permissions vulnerability in linux-nfs nfs-utils. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39.3% of scored vulnerabilities.
Timeline
- 04-03-2026PublishedVulnerability first disclosed.
- 16-10-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · Red hatEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.47%
Chance of exploitation in the next 30 days
Percentile
39%
Versus all other CVEs
30-day change
+0.01 pp
From 0.46% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-279Incorrect Execution-Assigned PermissionsWhile it is executing, the product sets the permissions of an object in a way that violates the intended permissions that have been specified by the user.
- CWE-732Incorrect Permission Assignment for Critical ResourceThe product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.
Affected systems
Ubuntu169 products
- linuxAll versions (No fix recorded)
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Redhat12 products
- enterprise_linuxEOL6.0 | 7.0 | 8.0 | 9.0 | 10.0
- openshift_container_platform4.0
- libnfsidmap< 1:2.3.3-68.el8_10 | < 1:2.8.3-0.el10_1.3 | < 1:2.5.4-38.el9_7.3 | < 1:2.5.4-34.el9_6.3 | < 1:2.5.4-26.el9_4.3
- libnfsidmap-debuginfo< 1:2.3.3-68.el8_10 | < 1:2.8.3-0.el10_1.3 | < 1:2.5.4-38.el9_7.3 | < 1:2.5.4-34.el9_6.3 | < 1:2.5.4-26.el9_4.3
- libnfsidmap-devel< 1:2.3.3-68.el8_10 | < 1:2.8.3-0.el10_1.3 | < 1:2.5.4-38.el9_7.3 | < 1:2.5.4-34.el9_6.3 | < 1:2.5.4-26.el9_4.3
Suse6 products
- libnfsidmap0&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 0.26-150600.28.19.1
- libnfsidmap0&distro=SUSE Linux Enterprise Server 15 SP6-LTSS< 0.26-150600.28.19.1
- libnfsidmap0&distro=SUSE Linux Enterprise Server for SAP Applications 15 SP6< 0.26-150600.28.19.1
- nfs-utils&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 2.6.4-150600.28.19.1
- nfs-utils&distro=SUSE Linux Enterprise Server 15 SP6-LTSS< 2.6.4-150600.28.19.1
Opensuse2 products
- libnfsidmap0&distro=openSUSE Leap 15.6< 0.26-150600.28.19.1
- nfs-utils&distro=openSUSE Leap 15.6< 2.6.4-150600.28.19.1
Debian1 product
- nfs-utilsAll versions (No fix recorded) | < 1:2.8.6-1
Linux-nfs1 product
6 vendors · 191 products
References
27 links- access.redhat.com/errata/RHSA-2026:3938Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- access.redhat.com/errata/RHSA-2026:3939Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- access.redhat.com/errata/RHSA-2026:3940Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- access.redhat.com/errata/RHSA-2026:3941Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
- access.redhat.com/errata/RHSA-2026:3942Vendor AdvisoryX Refsource REDHATAdvisoryThird Party Advisory
Show all 27 references
- bugzilla.redhat.com/show_bug.cgi?id=2413081Issue TrackingX Refsource REDHATREPORTThird Party Advisory