CVE-2025-47282Network attack vector

Seed-cluster takeover via unvalidated Google credentials

Published May 19, 2025 · Updated May 20, 2025

Privilege escalation in Gardener External DNS Management before 0.23.6 allows remote authenticated users to control the seed cluster. The Google Cloud DNS handler passes a DNSProvider secret's serviceaccount.json to google.CredentialsFromJSON without first requiring service-account type or validating project_id. Administrative rights to a Gardener project, a shoot cluster, or one shoot namespace are sufficient to supply crafted credentials and cross the shoot-to-seed trust boundary.

CVSS severity9.9
Critical
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Gardener External DNS Management before 0.23.6 allows remote authenticated users to control the seed cluster. The Google Cloud DNS handler passes a DNSProvider secret's serviceaccount.json to google.CredentialsFromJSON without first requiring service-account type or validating project_id. Administrative rights to a Gardener project, a shoot cluster, or one shoot namespace are sufficient to supply crafted credentials and cross the shoot-to-seed trust boundary.

The record

CVE
CVE-2025-47282
Published
May 19, 2025
Updated
May 20, 2025
Vendor
Gardener
Product
External DNS Management
Classifications
CWE-269, CWE-20, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 19, 2025CVE publishedPublication date reported by the CVE source.
  2. May 20, 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=< 0.23.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gardener · External DNS Managementversion=< 0.23.6

Published CVSS scores

9.9GitHubCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
CWE-20Improper Input Validation
T1068Exploitation for Privilege Escalation

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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