PT-2026-31312 · Red Hat · Openshift Update Service

Published 2025-08-26 · Updated 2026-05-04 · CVE-2025-57854

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions OpenShift Update Service (OSUS) (affected versions not specified)

Description A container privilege escalation flaw exists in certain OpenShift Update Service (OSUS) images. The issue is due to the /etc/passwd file being created with group-writable permissions during the build process. An attacker executing commands within an affected container, even as a non-root user, may be able to modify the /etc/passwd file by leveraging root group membership. This could allow the addition of a new user with an arbitrary UID, including UID 0, resulting in full root privileges within the container.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Incorrect Default Permissions

Weakness Enumeration

CWE-276

Related Identifiers

BDU:2026-05280

CVE-2025-57854

Affected Products

Openshift Update Service

References · 6

• https://access.redhat.com/security/cve/CVE-2025-57854 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-57854 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2391107 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05280 · Security Note
• https://twitter.com/CVEnew/status/2043295650666750076 · Twitter Post
• https://t.me/cveNotify/162022 · Telegram Post