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.
CVE-2025-57849
MEDIUMNVD 6.46.4—
EchelonGraph scoreMEDIUM confidence
Score 6.4 from GitHub Security Advisory published 2026-03-13. NVD baseline CVSS 6.4; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.4Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.4
- EG Score
- 6.4(medium)
- EPSS
- 10.9%
- KEV
- Not listed
Published
March 13, 2026
Last Modified
June 5, 2026
References (2)
- secalert@redhathttps://access.redhat.com/security/cve/CVE-2025-57849
- secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2391100
Frequently asked(5)
What is CVE-2025-57849?
CVE-2025-57849 is a medium vulnerability published on March 13, 2026. 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…
When was CVE-2025-57849 disclosed?
CVE-2025-57849 was first published in the National Vulnerability Database on March 13, 2026, with the most recent update on June 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-57849 actively exploited?
CVE-2025-57849 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-57849?
CVE-2025-57849 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2025-57849?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-57849, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2025-57849
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