A container privilege escalation flaw was found in certain Multicluster Engine for Kubernetes images. This issue stems from the /etc/passwd file being created with group-writable permissions during build time. In certain conditions, an attacker who can execute commands within an affected container, even as a non-root user, can leverage their membership in the root group to modify the /etc/passwd file. This could allow the attacker to add a new user with any arbitrary UID, including UID 0, leading to full root privileges within the container.
References
| Link | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2025-57851 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2391104 | Issue Tracking Vendor Advisory |
Configurations
History
01 May 2026, 20:30
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://access.redhat.com/security/cve/CVE-2025-57851 - Vendor Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2391104 - Issue Tracking, Vendor Advisory | |
| First Time |
Redhat
Redhat advanced Cluster Management For Kubernetes |
|
| CPE | cpe:2.3:a:redhat:advanced_cluster_management_for_kubernetes:-:*:*:*:*:*:*:* |
08 Apr 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-08 14:16
Updated : 2026-05-01 20:30
NVD link : CVE-2025-57851
Mitre link : CVE-2025-57851
CVE.ORG link : CVE-2025-57851
JSON object : View
Products Affected
redhat
- advanced_cluster_management_for_kubernetes
CWE
CWE-276
Incorrect Default Permissions