What is CVE-2018-1000028?

CVE-2018-1000028 is a high-severity vulnerability in Linux Kernel, classified under Improper Privilege Management. CVSS score: 7.4/10. Published 2018-02-09.

How severe is CVE-2018-1000028?

High severity. CVSS v3 base score is 7.4 out of 10.

Privilege escalation in Linux Kernel

CVE-2018-1000028

Linux kernel version after commit bdcf0a423ea1 - 4.15-rc4+, 4.14.8+, 4.9.76+, 4.4.111+ contains a Incorrect Access Control vulnerability in NFS server (nfsd) that can result in remote users reading or writing files they should not be able to via NFS. This attack appear to be exploitable via NFS server must export a filesystem with the "rootsquash" options enabled. This vulnerability appears to have been fixed in after commit 1995266727fa.

Vulnerability class: Privilege Escalation

Published 2018-02-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.014 (71.1th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Linux Kernel — versions 4.15

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

git.kernel.org/linus/1995266727fa8143897e89b55f5d3c79aa828420 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-1000028?: CVE-2018-1000028 is a high-severity vulnerability in Linux Kernel, classified under Improper Privilege Management. CVSS score: 7.4/10. Published 2018-02-09.
How severe is CVE-2018-1000028?: High severity. CVSS v3 base score is 7.4 out of 10.