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CVE-2026-5367

8.6 · HIGH

A flaw was found in OVN (Open Virtual Network).

Published Apr 24, 2026CWE-130EPSS 0.88%

Overview

CVE-2026-5367 is a high-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/errata/RHSA-2026:11694Refaccess.redhat.com/errata/RHSA-2026:11695Refaccess.redhat.com/errata/RHSA-2026:11696Refaccess.redhat.com/errata/RHSA-2026:11698Refaccess.redhat.com/errata/RHSA-2026:11700Refaccess.redhat.com/errata/RHSA-2026:11701Refaccess.redhat.com/errata/RHSA-2026:11702Refaccess.redhat.com/errata/RHSA-2026:22110Refaccess.redhat.com/errata/RHSA-2026:22111Refaccess.redhat.com/security/cve/CVE-2026-5367

How CyberStrike helps

Frequently asked questions

What is CVE-2026-5367?

CVE-2026-5367 is a high-severity vulnerability. It was published on April 24, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2026-5367?

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-5367?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-5367?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-5367 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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