CVE-2025-57851

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.

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

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

Configuration 1 (hide)

cpe:2.3:a:redhat:advanced_cluster_management_for_kubernetes:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-04-08 14:16

Updated : 2026-07-24 20:10

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

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