CVE-2025-57848

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 23/100
Published: 2025-10-23 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: High
PR: High
UI: None
S: Unchanged
C: High
I: High
A: High

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.

References & Advisories (8)

https://access.redhat.com/errata/RHEA-2025:19904
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHEA-2025:20007
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHEA-2025:21119
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHEA-2025:21677
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHEA-2025:22750
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHEA-2026:0511
vendor-advisory x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2391099
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

23 / 100
✓ No user interaction

CVSS Score

6.4 / 10.0 v3.1
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.19%
Raw Score 0.001910
Percentile 8.8%
Date 2026-10-31

EPSS Trend

2026-10-31
0.00191
2026-10-30
0.00191

Intelligence Sources

mitre ref →
nvd ref →