CVE-2025-57849: redhat fuse Incorrect Default Permissions
Vulnerability summary
CVE-2025-57849 is a medium (CVSS 6.4) Incorrect Default Permissions vulnerability in redhat fuse. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.1% of scored vulnerabilities.
Timeline
- 13-03-2026PublishedVulnerability first disclosed.
- 13-03-2026Last modifiedVulnerability information updated.
Description
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 metrics
2 scores · 2 sources · 1 version- NVDNIST6.4MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
11%
Versus all other CVEs
30-day change
+0.01 pp
From 0.21% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat1 product
- fuse7.0.0
1 vendor · 1 product