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CVE-2025-67499

6.6 · MEDIUM

The CNI portmap plugin allows containers to emulate opening a host port, forwarding that traffic to the container.

Published Dec 10, 2025CWE-200EPSS 0.14%

Overview

CVE-2025-67499 is a medium-severity vulnerability. It was published on December 10, 2025 and has a CVSS 3.1 base score of 6.6 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.6, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

The CNI portmap plugin allows containers to emulate opening a host port, forwarding that traffic to the container. Versions 1.6.0 through 1.8.0 inadvertently forward all traffic with the same destination port as the host port when the portmap plugin is configured with the nftables backend, thus ignoring the destination IP. This includes traffic not intended for the node itself, i.e. traffic to containers hosted on the node. Containers that request HostPort forwarding can intercept all traffic destined for that port. This requires that the portmap plugin be explicitly configured to use the nftables backend. This issue is fixed in version 1.9.0. To workaround, configure the portmap plugin to use the iptables backend. It does not have this vulnerability.

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

GitHubgithub.com/containernetworking/plugins/pull/1210GitHubgithub.com/containernetworking/plugins/releases/tag/v1.9.0GitHubgithub.com/containernetworking/plugins/security/advisories/GHSA-jv3w-x3r3-g6rm

How CyberStrike helps

Frequently asked questions

What is CVE-2025-67499?

CVE-2025-67499 is a medium-severity vulnerability. It was published on December 10, 2025 and has a CVSS 3.1 base score of 6.6 (MEDIUM).

How severe is CVE-2025-67499?

This vulnerability has a CVSS 3.1 base score of 6.6, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-67499?

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-2025-67499?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-67499 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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