[UPDATE] [high] Red Hat Advanced Cluster Management and Multicluster engine for Kubernetes: Vulnerability allows code execution or DoS

highCVE-2026-29063

A remote, authenticated attacker can exploit a vulnerability in Red Hat Advanced Cluster Management and Multicluster engine for Kubernetes to execute arbitrary program code or cause a denial-of-service condition.

CSIRTS triage

vendor: Red Hat product: Advanced Cluster Management and Multicluster engine for Kubernetes Remote code execution Denial of service

What: A remote, authenticated attacker can exploit a vulnerability in Red Hat Advanced Cluster Management and Multicluster engine for Kubernetes to execute arbitrary program code or cause a denial-of-service condition.
Who is affected: Authenticated users of Red Hat Advanced Cluster Management and Multicluster engine for Kubernetes are affected.
Urgency: Remediation is urgent due to the high severity and potential for code execution.
Action: Apply the latest patches from Red Hat to mitigate this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-07-23
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1367

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-290630.98% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 59% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-29063	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

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high[NEW] [high] Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira and Jira Service Management: Mul…cert-bund
high[UPDATE] [high] Atlassian Bamboo, Bitbucket, Confluence, Jira: Multiple vulnerabilitiescert-bund
unknownMultiple vulnerabilities in Atlassian products (July 27, 2026)cert-fr-avis
medium[UPDATE] [medium] IBM WebSphere Application Server Liberty: Multiple vulnerabilitiescert-bund
high[UPDATE] [high] IBM App Connect Enterprise: Multiple vulnerabilitiescert-bund

Recent advisories for Red Hat Advanced

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-73137: A flaw was found in the multicloud-operators-subscription component of Red Hat Advanced Cluste…nvd · 2026-08-20
highCVE-2026-66787: A flaw was found in the lighthouse component of Red Hat Advanced Cluster Management for Kubern…nvd · 2026-08-20
highCVE-2026-66783: A flaw was found in the `submariner-operator` component of Red Hat Advanced Cluster Management…nvd · 2026-08-18
mediumCVE-2026-75485: A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kuber…nvd · 2026-08-18
mediumCVE-2026-73834: A flaw was found in the must-gather component of Red Hat Advanced Cluster Management for Kuber…nvd · 2026-08-18
highCVE-2026-66793: A flaw was found in the governance-policy-addon-controller component of Red Hat Advanced Clust…nvd · 2026-08-18