A container privilege escalation flaw was found in certain Container-native Virtualization 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.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 6.4NVD modified 2026-10-08 11:10
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 7
- https://access.redhat.com/errata/RHEA-2025:19904
- https://access.redhat.com/errata/RHEA-2025:21119
- https://access.redhat.com/errata/RHEA-2025:21677
- https://access.redhat.com/errata/RHEA-2025:22750
- https://access.redhat.com/errata/RHEA-2026:0511
- https://access.redhat.com/security/cve/CVE-2025-57848
- https://bugzilla.redhat.com/show_bug.cgi?id=2391099