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Vulnerabilities CVE-2025-57848

CVE-2025-57848

Medium
Open
TLP:CLEAR

Container-native-virtualization: privilege escalation via excessive /etc/passwd permissions

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Description

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.

Details

CVSS Score
6.4
EPSS Score
0.18%

7.5th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Oct 23, 2025
Last Modified
Aug 6, 2026
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