IBM Turbonomic Agent CVE-2026-6389: Cluster-Wide Secret Exposure
The National Vulnerability Database has detailed CVE-2026-6389, a critical vulnerability affecting IBM Turbonomic prometurbo agent versions 8.16.0 through 8.17.6. This flaw grants the agent excessive cluster-wide permissions, including unrestricted read access to all secrets. This isn’t just a misconfiguration; it’s a gaping hole.
An attacker who compromises the operator or its associated service account can exploit this to exfiltrate sensitive credentials. This isn’t a theoretical risk; it’s a direct path to privilege escalation and, ultimately, a full cluster compromise. The CVSSv3.1 score of 8.8 (High) underscores the severity, with a vector indicating low attack complexity and no user interaction required once initial access is gained.
For defenders, this means understanding the blast radius. If an attacker lands on any part of your Kubernetes cluster and can compromise this agent, they own your secrets. This is a classic supply chain risk within your own infrastructure, where a critical component becomes an Achilles’ heel for the entire environment.
What This Means For You
- If your organization uses IBM Turbonomic prometurbo agent versions 8.16.0 through 8.17.6, you need to prioritize patching this vulnerability immediately. Audit your cluster for any signs of compromise, specifically looking for unusual access patterns to secrets or service account activity related to the Turbonomic agent. Assume compromise if you cannot confirm proactive patching.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
IBM Turbonomic Agent Excessive Permissions - CVE-2026-6389
title: IBM Turbonomic Agent Excessive Permissions - CVE-2026-6389
id: scw-2026-04-30-ai-1
status: experimental
level: critical
description: |
Detects the execution of the IBM Turbonomic prometurbo agent with commands that attempt to list all secrets across all namespaces, indicating potential exploitation of CVE-2026-6389 for cluster-wide secret exposure.
author: SCW Feed Engine (AI-generated)
date: 2026-04-30
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-6389/
tags:
- attack.privilege_escalation
- attack.t1068
logsource:
category: process_creation
detection:
selection:
Image|contains:
- '/opt/turbonomic/agent/bin/prometurbo'
CommandLine|contains:
- 'kubectl get secrets --all-namespaces'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-6389 | Privilege Escalation | IBM Turbonomic prometurbo agent versions 8.16.0 through 8.17.6 |
| CVE-2026-6389 | Information Disclosure | IBM Turbonomic prometurbo agent versions 8.16.0 through 8.17.6 - unrestricted read access to all secrets |
| CVE-2026-6389 | Auth Bypass | IBM Turbonomic prometurbo agent versions 8.16.0 through 8.17.6 - excessive cluster-wide permissions |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 01, 2026 at 01:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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