🛡️ CVE-2025-67499
🟡 CVSS 6.6 — Medium ✅ No Known Exploit CWE-200 NVD
6.6
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 6.6
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
CWE CWE-200
Public Exploit ✅ No
Source NVD
Published 2025-12-10
Updated 2026-06-15
Modified 2026-03-17

Affected Packages

Software From version Fixed in
cni-network-plugins 1.6.0 1.9.0
github.com/containernetworking/plugins — —

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