Privilege escalation in Ceph
CVE-2025-52555
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.
Vulnerability class: Privilege Escalation
EPSS: 0.002 (6.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N.
Affected products
- Ceph — versions = 17.2.7, >= 18.2.1, < 18.2.5, >= 19.0.0, < 19.2.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-52555?
- CVE-2025-52555 is a medium-severity vulnerability in Ceph, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2025-06-26.
- How severe is CVE-2025-52555?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-52555 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.