CVE-2025-59823Network attack vector

Seed-cluster takeover via unvalidated Terraform inputs

Published Sep 25, 2025 · Updated Sep 25, 2025

Code injection in affected Gardener provider extensions allows remote authenticated users to take control of the managing seed cluster. The Terraform infrastructure reconciler renders administrator-controlled Shoot configuration values into Terraform code without restricting them to expected formats. The path requires administrative access to a Gardener project and an installation where Terraformer is used or can be enabled.

CVSS severity9.9
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in affected Gardener provider extensions allows remote authenticated users to take control of the managing seed cluster. The Terraform infrastructure reconciler renders administrator-controlled Shoot configuration values into Terraform code without restricting them to expected formats. The path requires administrative access to a Gardener project and an installation where Terraformer is used or can be enabled.

The record

CVE
CVE-2025-59823
Published
Sep 25, 2025
Updated
Sep 25, 2025
Vendor
Gardener
Product
Gardener Extension Provider AWS
Classifications
CWE-94, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 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=< 1.46.0
  2. Affected versionversion=< 1.49.0
  3. Affected versionversion=< 1.55.0
  4. Affected versionversion=< 1.64.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gardener · Gardener Extension Provider AWSversion=< 1.46.0; version=< 1.49.0; version=< 1.55.0; version=< 1.64.0

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-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

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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