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VulnerabilityPublished

CVE-2025-67499: containernetworking plugins · Information Exposure

Affects containernetworking pluginsSource CVE Database V5

0

Not known to be exploited · CVSS 6.6 Medium · fixed in 1.9.0 : update containernetworking plugins when convenient.

Data as of 26 Oct 2026, 12:55 UTC

CVSS 3.1 base score
6.6Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.9.0
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 9 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
GitHubcontainernetworking/pluginspkg:github/containernetworking/pluginsOther threatsAffected
  • =1.6.0
  • =1.8.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should immediately assess their container networking configurations to determine if the portmap plugin is in use with the nftables backend and if HostPort forwarding is enabled. If so, they should upgrade the containernetworking plugins to version 1.9.0 or later, which contains the fix. If upgrading is not immediately feasible, reconfigure the portmap plugin to use the iptables backend as a temporary workaround, as it does not exhibit this vulnerability. Additionally, restrict the use of HostPort forwarding to only trusted containers and minimize privileges granted to containerized workloads to reduce the risk of exploitation. Network segmentation and monitoring should be enhanced to detect unusual traffic patterns indicative of interception attempts. Implement strict container runtime security policies and conduct regular audits of container configurations. Finally, ensure that container orchestration platforms and underlying hosts are patched and hardened to reduce the attack surface.

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.

References

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