CVE-2022-28224Public exploitNetwork attack vector

Traffic interception via unchecked floating IP annotation

Published Jun 6, 2022 · Updated Sep 16, 2024

Route hijacking in Tigera Calico 3.22.1 and earlier and Calico Enterprise 3.12.0 and earlier allows remote authenticated users to intercept traffic. Floating-IP validation can be bypassed by adding cni.projectcalico.org/floatingIPs directly after pod creation, even when the feature is disabled. Kubernetes RBAC permission to patch pods or pod status, or to update pod status, is required; the resulting route lasts until the pod or annotation is removed.

CVSS severity5.5
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Route hijacking in Tigera Calico 3.22.1 and earlier and Calico Enterprise 3.12.0 and earlier allows remote authenticated users to intercept traffic. Floating-IP validation can be bypassed by adding cni.projectcalico.org/floatingIPs directly after pod creation, even when the feature is disabled. Kubernetes RBAC permission to patch pods or pod status, or to update pod status, is required; the resulting route lasts until the pod or annotation is removed.

The record

CVE
CVE-2022-28224
Published
Jun 6, 2022
Updated
Sep 16, 2024
Vendor
Tigera
Product
Calico
Classifications
CWE-200, CWE-201, T1557
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=v3.22.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Tigera · Calicoversion=unspecified <=v3.22.1
Tigera · Calico Enterpriseversion=unspecified <=v3.12.0

Published CVSS scores

5.5NVDAV:N/AC:L/Au:S/C:N/I:P/A:P
5.5TigeraCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H
5.5NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-201Insertion of Sensitive Information Into Sent Data
T1557Adversary-in-the-Middle

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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