CVE-2025-67499
The CNI portmap plugin allows containers to emulate opening a host port, forwarding that traffic to the container.
Published Dec 10, 2025 · updated Oct 14, 2026 · linuxfoundation cni network plugins
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.
Timeline
Detection, updates, and resolution for this record.
Dec 10, 2025 · NIST NVD
Detected
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 con
Oct 14, 2026 · NIST NVD
Updated
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 con
Affected
- cpe linuxfoundation/cni network pluginsversion unspecified
Sources
- CVE.orgCVE-2025-67499
Official CVE identifier
cve.org - FIRST EPSSCVE-2025-67499
30-day exploitation probability 0.1%
first.org - NIST NVDCVE-2025-67499
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 nftabl
nvd.nist.gov