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CVE-2026-43503VulnerabilityPublished Updated

Red Hat Security Advisory: OpenShift Container Platform 4.20.24 bug fix and security update

Affects Red HatSource GCVE Database

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Mentioned vulnerabilities

Public exploit available (Metasploit).

Data as of 30 Oct 2026, 02:46 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    1 Metasploit module

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

AI-suggested

Red Hat has released OpenShift Container Platform 4.20.24 with updated container images and packages that fix this vulnerability. All users of OpenShift Container Platform 4.20 are strongly advised to upgrade to these updated versions as soon as they are available in the appropriate release channels. Upgrades can be performed using the OpenShift CLI (oc) or the web console. Detailed upgrade instructions are provided in the official Red Hat documentation. No alternative mitigations or workarounds are specified; applying the update is the recommended remediation.

Description

Red Hat OpenShift Container Platform 4.20.24 includes a security update addressing a local privilege escalation vulnerability in the Linux kernel, identified as CVE-2026-46300, known as the "Fragnesia" variant of the Dirty Frag vulnerability in the ESP/XFRM subsystem. This update fixes several bugs and adds enhancements. Users of OpenShift Container Platform 4.20 are advised to upgrade to the updated packages and container images available in the appropriate release channels.

References

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