Nfs-utils: rpc.mountd in the nfs-utils privilege escalation
Priority LOW 29CWE-279Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 19 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00514 44th percentileScored 2026-11-07
Fix Partial Red Hat: 10 advisoriesRed Hat: 19 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | 1:2.8.3-0.el10_1.3 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 1:2.3.3-68.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 1:2.5.4-38.el9_7.3 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 1:2.5.4-38.el9_7.3 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | — | 1:2.5.4-26.el9_4.3 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | 1:2.5.4-34.el9_6.3 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4.16 | — | 416.94.202603231244-0 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4.17 | — | 417.94.202603242359-0 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4.18 | — | 418.94.202603181125-0 | Patch available | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — | 4.19.9.6.202603251941-0 | Patch available | CNA |
| Red Hat | Red Hat Ceph Storage 8 | — | 1774002867 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | No fix listed | CNA |
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 1:2.8.3-0.el10_1.3 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 1:2.3.3-68.el8_10 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 1:2.5.4-38.el9_7.3 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 1:2.5.4-38.el9_7.3 Patch available CNA
- Red Hat Enterprise Linux 9.4 Extended Update Support VendorRed Hat Affected — Fixed in 1:2.5.4-26.el9_4.3 Patch available CNA
- Red Hat Enterprise Linux 9.6 Extended Update Support VendorRed Hat Affected — Fixed in 1:2.5.4-34.el9_6.3 Patch available CNA
- Red Hat OpenShift Container Platform 4.16 VendorRed Hat Affected — Fixed in 416.94.202603231244-0 Patch available CNA
- Red Hat OpenShift Container Platform 4.17 VendorRed Hat Affected — Fixed in 417.94.202603242359-0 Patch available CNA
- Red Hat OpenShift Container Platform 4.18 VendorRed Hat Affected — Fixed in 418.94.202603181125-0 Patch available CNA
- Red Hat OpenShift Container Platform 4.19 VendorRed Hat Affected — Fixed in 4.19.9.6.202603251941-0 Patch available CNA
- Red Hat Ceph Storage 8 VendorRed Hat Affected — Fixed in 1774002867 Patch available CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* | 6.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Red Hat |
| cpe:2.3:a:linux-nfs:nfs-utils:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Linux-nfs |
- cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Red Hat
- cpe:2.3:a:linux-nfs:nfs-utils:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Linux-nfs
Remediation
Red Hat 10 advisories
- RHSA-2026:5873 Released 2026-04-02 · Red Hat rating ModerateOpenShift Container Platform 4.16.59 bug fix and security update
- Red Hat OpenShift Container Platform 4.16 rhcos-aarch64-416.94.202603231244-0, rhcos-ppc64le-416.94.202603231244-0, rhcos-s390x-416.94.202603231244-0 +1
- RHSA-2026:5877 Released 2026-04-01 · Red Hat rating ModerateOpenShift Container Platform 4.19.27 bug fix and security update
- Red Hat OpenShift Container Platform 4.19 rhcos-aarch64-4.19.9.6.202603251941-0, rhcos-ppc64le-4.19.9.6.202603251941-0, rhcos-s390x-4.19.9.6.202603251941-0 +1
- RHSA-2026:5867 Released 2026-04-01 · Red Hat rating ModerateOpenShift Container Platform 4.17.52 bug fix and security update
- Red Hat OpenShift Container Platform 4.17 rhcos-aarch64-417.94.202603242359-0, rhcos-ppc64le-417.94.202603242359-0, rhcos-s390x-417.94.202603242359-0 +1
Show 7 more Red Hat advisories
- RHSA-2026:5127 Released 2026-03-25 · Red Hat rating ModerateOpenShift Container Platform 4.18.36 bug fix and security update
- Red Hat OpenShift Container Platform 4.18 rhcos-aarch64-418.94.202603181125-0, rhcos-ppc64le-418.94.202603181125-0, rhcos-s390x-418.94.202603181125-0 +1
- RHSA-2026:5606 Released 2026-03-24 · Red Hat rating ImportantRed Hat Ceph Storage
- Red Hat Ceph Storage 8 registry.redhat.io/rhceph/rhceph-8-rhel9
- RHSA-2026:3941 Released 2026-03-06 · Red Hat rating Moderatenfs-utils security update
- Red Hat CodeReady Linux Builder EUS (v.9.6) libnfsidmap-devel-1:2.5.4-34.el9_6.3
- Red Hat Enterprise Linux AppStream EUS (v.9.6) nfs-utils-coreos-1:2.5.4-34.el9_6.3, nfsv4-client-utils-1:2.5.4-34.el9_6.3
- Red Hat Enterprise Linux BaseOS EUS (v.9.6) libnfsidmap-1:2.5.4-34.el9_6.3, nfs-utils-1:2.5.4-34.el9_6.3
- RHSA-2026:3939 Released 2026-03-06 · Red Hat rating Moderatenfs-utils security update
- Red Hat Enterprise Linux AppStream (v. 10) nfs-utils-coreos-1:2.8.3-0.el10_1.3, nfsv4-client-utils-1:2.8.3-0.el10_1.3
- Red Hat Enterprise Linux BaseOS (v. 10) libnfsidmap-1:2.8.3-0.el10_1.3, nfs-utils-1:2.8.3-0.el10_1.3
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libnfsidmap-devel-1:2.8.3-0.el10_1.3
- RHSA-2026:3942 Released 2026-03-06 · Red Hat rating Moderatenfs-utils security update
- Red Hat CodeReady Linux Builder EUS (v.9.4) libnfsidmap-devel-1:2.5.4-26.el9_4.3
- Red Hat Enterprise Linux AppStream EUS (v.9.4) nfs-utils-coreos-1:2.5.4-26.el9_4.3, nfsv4-client-utils-1:2.5.4-26.el9_4.3
- Red Hat Enterprise Linux BaseOS EUS (v.9.4) libnfsidmap-1:2.5.4-26.el9_4.3, nfs-utils-1:2.5.4-26.el9_4.3
- RHSA-2026:3940 Released 2026-03-05 · Red Hat rating Moderatenfs-utils security update
- Red Hat Enterprise Linux AppStream (v. 9) nfs-utils-coreos-1:2.5.4-38.el9_7.3, nfsv4-client-utils-1:2.5.4-38.el9_7.3
- Red Hat Enterprise Linux BaseOS (v. 9) libnfsidmap-1:2.5.4-38.el9_7.3, nfs-utils-1:2.5.4-38.el9_7.3
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libnfsidmap-devel-1:2.5.4-38.el9_7.3
- RHSA-2026:3938 Released 2026-03-05 · Red Hat rating Moderatenfs-utils security update
- Red Hat Enterprise Linux BaseOS (v. 8) libnfsidmap-1:2.3.3-68.el8_10, nfs-utils-1:2.3.3-68.el8_10
- Red Hat Enterprise Linux CRB (v. 8) libnfsidmap-devel-1:2.3.3-68.el8_10
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet |
| Red Hat OpenShift Container Platform 4 | Affected | No fix planned: Will not fix |
| Red Hat Ceph Storage 8 | Fixed | RHSA-2026:5606 |
| Red Hat CodeReady Linux Builder EUS (v.9.4) | Fixed | RHSA-2026:3942 |
| Red Hat CodeReady Linux Builder EUS (v.9.6) | Fixed | RHSA-2026:3941 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:3939 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:3940 |
| Red Hat Enterprise Linux AppStream EUS (v.9.4) | Fixed | RHSA-2026:3942 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:3941 |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2026:3939 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2026:3938 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2026:3940 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.4) | Fixed | RHSA-2026:3942 |
| Red Hat Enterprise Linux BaseOS EUS (v.9.6) | Fixed | RHSA-2026:3941 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2026:3938 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:3939 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:3940 |
| Red Hat OpenShift Container Platform 4.16 | Fixed | RHSA-2026:5873 |
| Red Hat OpenShift Container Platform 4.17 | Fixed | RHSA-2026:5867 |
| Red Hat OpenShift Container Platform 4.18 | Fixed | RHSA-2026:5127 |
| Red Hat OpenShift Container Platform 4.19 | Fixed | RHSA-2026:5877 |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-12801
- 2026-10-03 Alias added: GHSA-q8x7-j9x6-2fpc
- 2026-10-16 Fix available: openshift/[email protected], openshift/[email protected], openshift/[email protected] +1 · CNA
References
More Red Hat Enterprise Linux vulnerabilities
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
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- TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
- TI-2025-23530 Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf… KEVCVSS 3.1CRITICAL 9.3
- TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
Sources
- CVE-2025-12801 · CVE Program
- CVE-2025-12801 · NVD
- FIRST EPSS
- GHSA-q8x7-j9x6-2fpc · GitHub Advisory Database · CC BY 4.0
- CVE-2025-12801 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences