CVE-2026-6389: IBM Turbonomic prometurbo agent 8.16.0 through 8.17.6 IBM Turbonomic Application Resource Management grants ex

Routine

HIGH 8.8UPGRADE

CVE-2026-6389 is a high-severity flaw (CVSS 8.8) affecting turbonomic prometurbo agent. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

IBM Turbonomic prometurbo agent 8.16.0 through 8.17.6 IBM Turbonomic Application Resource Management grants excessive cluster‑wide permissions, including unrestricted read access to all secrets. An attacker that compromises the operator or its service account can exfiltrate sensitive credentials, escalate privileges, and potentially achieve full cluster compromise.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-269
Published	2026-04-30
Last modified	2026-10-26

Publisher (CNA): IBM Corporation · Vendor: ibm

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-30 22:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

ibm turbonomic prometurbo agent UPGRADE

Affected: >= 8.16.0 and < 8.18.0

Fixed in: 8.18.0

Safe to downgrade to: a release before 8.16.0

1. Check installed version

apt-cache policy turbonomic-prometurbo-agent || rpm -q turbonomic-prometurbo-agent || turbonomic-prometurbo-agent --version

2. UPGRADE to 8.18.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade turbonomic-prometurbo-agent

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade turbonomic-prometurbo-agent

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 8.16.0 (Debian / Ubuntu)

apt-cache madison turbonomic-prometurbo-agent sudo apt install turbonomic-prometurbo-agent=<VERSION_BEFORE_8.16.0> sudo apt-mark hold turbonomic-prometurbo-agent

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list turbonomic-prometurbo-agent sudo dnf downgrade turbonomic-prometurbo-agent-<VERSION_BEFORE_8.16.0> sudo dnf versionlock add turbonomic-prometurbo-agent

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-6389?

turbonomic prometurbo agent: upgrade to 8.18.0. Exact commands for each OS are on this page.

Is CVE-2026-6389 being exploited?

CVE-2026-6389 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-6389 affect?

CVE-2026-6389 affects turbonomic prometurbo agent. Severity is high (CVSS 8.8). IBM Turbonomic prometurbo agent 8.16.0 through 8.17.6 IBM Turbonomic Application Resource Management grants excessive cluster‑wide permissions, including unrestricted read access to all secrets. An attacker that compromises the operator or

How urgent is CVE-2026-6389?

Priority 31/100. High severity

References

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