CVE-2025-57849: medium-severity vulnerability in Red Hat Fuse 7
Fuse: privilege escalation via excessive /etc/passwd permissions
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.4epss 0.2%
A container privilege escalation flaw was found in certain Fuse 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.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected products
Red Hat · Red Hat Fuse 7Related CVEs — Red Hat Fuse 7
In the same product, most dangerous first.
CVE-2024-5971HIGHUndertow: response write hangs in case of java 17 tlsv1.3 newsessionticketEPSS 2.9%CVE-2024-7885HIGHUndertow: improper state management in proxy protocol parsing causes information leakageEPSS 2.6%CVE-2026-93567HIGHIo.netty/netty-codec-http2: http/1 authority-form connect is translated to malformed http/2 connect with host-controlled :authorityEPSS 2.6%CVE-2025-9784HIGHUndertow: undertow madeyoureset http/2 ddos vulnerabilityEPSS 2.3%CVE-2026-93569HIGHIo.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authorityEPSS 2.2%CVE-2024-3653MEDIUMUndertow: learningpushhandler can lead to remote memory dos attacksEPSS 1.9%