Container Privilege Escalation Vulnerability in OpenShift Update Service
CVE-2025-57854

6.4MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Openshift Update Service
Vendor
CVE Published:
8 April 2026

What is CVE-2025-57854?

A vulnerability in OpenShift Update Service (OSUS) exposes containers to privilege escalation due to improperly set permissions on the /etc/passwd file during the build process. An attacker who can execute commands within an affected container may leverage their root group membership to alter the /etc/passwd file, potentially adding arbitrary users, including a user with UID 0. This could enable an attacker to gain complete root privileges within the container, posing significant security risks.

References

https://access.redhat.com/security/cve/CVE-2025-57854
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2391107
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Antony Di Scala and Michael Whale for reporting this issue.
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