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CVE-2019-9946

20
FAUCET Score

CVE-2019-9946 describes a network firewall misconfiguration in the Cloud Native Computing Foundation (CNCF) CNI 'portmap' plugin, version 0.7.4, which impacts Kubernetes. This flaw causes HostPort rules to take precedence over more specific service definitions, potentially misrouting traffic. With a CVSS score of 7.5 (HIGH), this vulnerability is remotely exploitable with low attack complexity, allowing for high integrity impact without requiring user interaction or privileges. There is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.7.5CPE matchmatch criteria
cpe:2.3:a:cncf:portmap:*:*:*:*:*:container_networking_interface:*:*
< 1.11.9CPE matchmatch criteria
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
>= 1.12.0, < 1.12.7CPE matchmatch criteria
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
>= 1.13.0, < 1.13.5CPE matchmatch criteria
cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*
1.13.6CPE matchmatch criteria
cpe:2.3:a:kubernetes:kubernetes:1.13.6:beta0:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.12%
Probability of exploitation in next 30 days
EPSS Percentile
86.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0312 is in the 76th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 ExtrasFixed in: containernetworking-plugins-0:0.7.5-2.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:rhel8-8010020190927090915.4985cc55
View patch

Vendor Advisories (1)

redhatCVE-2019-9946Moderate

kubernetes: Incorrect rule injection in CNI portmap plugin

Mar 28, 2019

References

access.redhat.com / errata/RHBA-2019:0862
github.com / containernetworking/plugins/pull/269
PatchThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/FCN66VYB3XS76SYH567SO7N3I254JOCT
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/SGOOWAELGH3F7OXRBPH3HCNZELNLXYTW
security.netapp.com / advisory/ntap-20190416-0002
PatchThird Party Advisory