Withdrawn Advisory: kubernetes-nmstate Insecure Privilege Management

published 2021-06-07 5 y ago modified 2026-09-10 1 mo ago also GHSA-jw82-xjgr-g6f8 , EUVD-2022-4440

cvss: 7.0; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits: 0; none known

An insecure modification vulnerability flaw was found in containers using nmstate/kubernetes-nmstate-handler. An attacker with access to the container could use this flaw to modify /etc/passwd and escalate their privileges. Versions before kubernetes-nmstate-handler-container-v2.3.0-30 are affected.

Patch / fix

fixed in 1

nmstate kubernetes-nmstate 2.3.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-1742 updated 2026-06-26 cvss 7.0

nmstate/kubernetes-nmstate-handler: /etc/passwd is given incorrect privileges

Red Hat CNV 2.3 for RHEL 8 container-native-virtualization/kubevirt-cpu-node-labeller v2.3.0-9, container-native-virtualization/kubevirt-kvm-info-nfd-plugin v2.3.0-9, container-native-virtualization/kubevirt-cpu-model-nfd-plugin v2.3.0-9
fixed: vendor fix RHEA-2020:2011

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1803608 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.0	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.4	AV:L/AC:M/Au:N/C:P/I:P/A:P

Affected products

n/a nmstate/kubernetes-nmstate-handler

Classification

Weakness

CWE-266 Incorrect Privilege Assignment
CWE-732 Incorrect Permission Assignment for Critical Resource

References

bugzilla.redhat.com /show_bug.cgi?id=1803608
web, exploit, issue-tracking, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2020-1742
advisory

Sources

CVE List CVE-2020-1742
GitHub Advisory GHSA-jw82-xjgr-g6f8
NVD CVE-2020-1742

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary