CVE-2026-4740
Essential information
- Published
- 07/04/2026 15:17
- Modified
- 08/04/2026 21:27
- Author
- —
- Creator
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- CVSS
- 8.2 HIGH (v3.1)
- CISA KEV
- No
- CWE
- —
- CVSS vector
-
—
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H—
CVSS metrics
- Access vector
- —
- Access complexity
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- Authentication
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- Confidentiality impact
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- Integrity impact
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- Availability impact
- —
- Exploitability
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- Remediation level
- —
- Report confidence
- —
- Temporal score
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- Attack vector
- LOCAL
- Attack complexity
- LOW
- Privileges required
- HIGH
- User interaction
- NONE
- Scope
- CHANGED
- Confidentiality impact
- HIGH
- Integrity impact
- HIGH
- Availability impact
- HIGH
- Exploit code maturity
- —
- Remediation level
- —
- Report confidence
- —
- Temporal score
- —
- Attack vector
- —
- Attack complexity
- —
- Attack requirements
- —
- Privileges required
- —
- User interaction
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- Confidentiality (V)
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- Confidentiality (S)
- —
- Integrity (V)
- —
- Integrity (S)
- —
- Availability (V)
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- Availability (S)
- —
- Exploit maturity
- —
Description
A flaw was found in Open Cluster Management (OCM), the technology underlying Red Hat Advanced Cluster Management (ACM). Improper validation of Kubernetes client certificate renewal allows a managed cluster administrator to forge a client certificate that can be approved by the OCM controller. This enables cross-cluster privilege escalation and may allow an attacker to gain control over other managed clusters, including the hub cluster.
NVD status
- Status
- Awaiting Analysis — CVE has been recently published to the CVE List and has been received by the NVD.
- Source
- [email protected]
- NVD
- View on NVD
Affected products (CPE)
| Product | CPE |
|---|---|
| red hat / open cluster management | cpe:2.3:a:red_hat:open_cluster_management:*:*:*:*:*:*:*:* |
| red hat / advanced cluster management | cpe:2.3:a:red_hat:advanced_cluster_management:*:*:*:*:*:*:*:* |
| kubernetes / kubernetes | cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* |