CVE-2025-52555 - CVE House

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Status published Medium CVE-2025-52555

CephFS Permission Escalation Vulnerability in Ceph Fuse mounted FS

6.5 CVSS

Vulnerability Description

Ceph is a distributed object, block, and file storage platform. In versions 17.2.7, 18.2.1 through 18.2.4, and 19.0.0 through 19.2.2, an unprivileged user can escalate to root privileges in a ceph-fuse mounted CephFS by chmod 777 a directory owned by root to gain access. The result of this is that a user could read, write and execute to any directory owned by root as long as they chmod 777 it. This impacts confidentiality, integrity, and availability. It is patched in versions 17.2.8, 18.2.5, and 19.2.3.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

ceph

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Affected Software

ceph

Vulnerable Versions:

= 17.2.7, >= 18.2.1, < 18.2.5, >= 19.0.0, < 19.2.3

Timeline

Official Publish: June 26th, 2025

Last Modified: November 3rd, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1078 Valid Accounts

T1098 Account Manipulation

Privilege Escalation

T1548 Abuse Elevation Control Mechanism

Privilege Escalation

T1222 File and Directory Permissions Modification

Defense Evasion

T1134 Access Token Manipulation

Defense Evasion