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Fencer Vulns
medium 6.5

CVE-2020-1750 json

A flaw was found in the machine-config-operator that causes an OpenShift node to become unresponsive when a container consumes a large amou…

published 2021-06-07 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-12581

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

A flaw was found in the machine-config-operator that causes an OpenShift node to become unresponsive when a container consumes a large amount of memory. An attacker could use this flaw to deny access to schedule new pods in the OpenShift cluster. This was fixed in openshift/machine-config-operator 4.4.3, openshift/machine-config-operator 4.3.25, openshift/machine-config-operator 4.2.36.

Patch / fix

  • redhat machine-config-operator 4.2.36, 4.3.25, 4.4.3

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-2020-1750 updated cvss 6.5

machine-config-operator-container: mmap stressor makes the cluster unresponsive

  • Red Hat OpenShift Container Platform 4.2 openshift4/ose-machine-config-operator v4.2.36-202006230600.p0
    fixed: vendor fix RHSA-2020:2595
  • Red Hat OpenShift Container Platform 4.3 openshift4/ose-machine-config-operator v4.3.25-202006081335
    fixed: vendor fix RHSA-2020:2439
  • Red Hat OpenShift Container Platform 4.4 openshift4/ose-machine-config-operator v4.4.0-202005011342
    fixed: vendor fix RHSA-2020:1939

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

0.87% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected products

  • n/a machine-config-operator-container

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

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.