CVE-2025-67499 | CNI Plugins Portmap nftables backend intercepts non-local traffic

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.

Published: 2025-12-10 Last update: 2026-03-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-67499 is rated Low Risk (26.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-67499

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-10 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-67499

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.6 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 4.7 [email protected]
3.6 3.1 LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.0 2.5 [email protected]

Weakness enumeration for CVE-2025-67499

GitHub Security Advisory for CVE-2025-67499

GHSA-jv3w-x3r3-g6rm · Severity: medium · Ecosystem: go — CNA Plugins Portmap nftables backend can intercept non-local traffic

OS Trackers for CVE-2025-67499

vendor priority summary link
alpine — CVE-2025-67499: 1 source package rows (singularity); 1 state rows across 1 repos (edge-community); fixed 1, open 0. https://security.alpinelinux.org/vuln/CVE-2025-67499
redhat medium — https://access.redhat.com/security/cve/CVE-2025-67499
suse medium CVE-2025-67499 severity moderate: SUSE including 13 source package names (docker, docker-29.2.1_ce-37.1, …), 111 product×package rows across 32 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS, … (32 product lines)): Known Not Affected 105, Fixed 6. https://www.suse.com/security/cve/CVE-2025-67499/
ubuntu medium CVE-2025-67499 medium priority: Ubuntu including 2 source packages (cni, golang-github-containernetworking-plugins), 11 status rows across 6 suites (focal, jammy, noble, plucky, questing, upstream): needs-triage 6, DNE 4, ignored 1. https://ubuntu.com/security/CVE-2025-67499

Affected software / configurations for CVE-2025-67499

Vendor Product Version Raw CPE
linuxfoundation cni_network_plugins >= 1.6.0, < 1.9.0 cpe:2.3:a:linuxfoundation:cni_network_plugins:*:*:*:*:*:*:*:*

References for CVE-2025-67499

cvelogic Threat Intelligence