Container Privilege Escalation Flaw in Red Hat Fuse Images
CVE-2025-57849

6.4MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Fuse 7
Vendor
CVE Published:
13 March 2026

What is CVE-2025-57849?

A security issue has been identified in specific versions of Red Hat Fuse images, where the /etc/passwd file is inadvertently created with group-writable permissions during the build process. This vulnerability could be exploited by an attacker executing commands as a non-root user within an affected container. By leveraging their membership in the root group, the attacker may manipulate the /etc/passwd file, potentially allowing them to add a user with arbitrary user ID (UID), including UID 0, which would grant them full root privileges within the container environment.

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References

https://access.redhat.com/security/cve/CVE-2025-57849
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2391100
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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