CVE-2021-20198

A flaw was found in the OpenShift Installer before version v0.9.0-master.0.20210125200451-95101da940b0. During installation of OpenShift Container Platform 4 clusters, bootstrap nodes are provisioned with anonymous authentication enabled on kubelet port 10250. A remote attacker able to reach this port during installation can make unauthenticated `/exec` requests to execute arbitrary commands within running containers. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

• CWE-306

• https://bugzilla.redhat.com/show_bug.cgi?id=1920764Issue Tracking, Patch, Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1920764Issue Tracking, Patch, Vendor Advisory

Published

Feb 23, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-20192Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2021-20193A flaw was found in the src/list.c of tar 1.33 and earlier. …3.3
• CVE-2021-20194There is a vulnerability in the linux kernel versions higher…7.8
• CVE-2021-20195A flaw was found in keycloak in versions before 13.0.0. A Se…9.6
• CVE-2021-20196A NULL pointer dereference flaw was found in the floppy disk…6.5
• CVE-2021-20197There is an open race window when writing output in the foll…6.3
• CVE-2021-20199Rootless containers run with Podman, receive all traffic wit…5.9
• CVE-2021-2020Vulnerability in the MySQL Server product of Oracle MySQL (c…6.5
• CVE-2021-20200Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2021-20201A flaw was found in spice in versions before 0.14.92. A DoS …5.3
• CVE-2021-20202A flaw was found in keycloak. Directories can be created pri…7.3
• CVE-2021-20203An integer overflow issue was found in the vmxnet3 NIC emula…3.2