CVE-2022-43757Network attack vector

Credential disclosure via plaintext Kubernetes objects

Published Feb 7, 2023 · Updated Mar 25, 2025

Cleartext credential storage in Rancher 2.5.0 through 2.5.16, 2.6.0 through 2.6.9, and 2.7.0 allows remote authenticated users to read secrets. Rancher stores secret tokens, encryption keys, SSH keys, and other sensitive cluster fields directly in plaintext Kubernetes Cluster and ClusterTemplateRevision objects exposed by two management API endpoints. Cluster Owners, Cluster Members, Project Owners, and Project Members can retrieve the objects, and the resulting impact is bounded by the permissions of each disclosed credential.

CVSS severity9.9
Critical
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext credential storage in Rancher 2.5.0 through 2.5.16, 2.6.0 through 2.6.9, and 2.7.0 allows remote authenticated users to read secrets. Rancher stores secret tokens, encryption keys, SSH keys, and other sensitive cluster fields directly in plaintext Kubernetes Cluster and ClusterTemplateRevision objects exposed by two management API endpoints. Cluster Owners, Cluster Members, Project Owners, and Project Members can retrieve the objects, and the resulting impact is bounded by the permissions of each disclosed credential.

The record

CVE
CVE-2022-43757
Published
Feb 7, 2023
Updated
Mar 25, 2025
Vendor
NeuVector
Product
Rancher
Classifications
CWE-312, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 2025Record 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=Rancher <2.5.17 changes=[{"at":"2.6.10","status":"unaffected"},{"at":"2.7.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NeuVector · Rancherversion=Rancher <2.5.17 changes=[{"at":"2.6.10","status":"unaffected"},{"at":"2.7.1","status":"unaffected"}]

Published CVSS scores

9.9SUSECVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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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