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MEDIUM

CVE-2025-52555

CVSS v3

6.5

MEDIUM

EPSS Score

0.2 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • cephBitnamifrom 17.2.7 · fixed in 17.2.8

Vendor advisories

  • CVE-2025-52555 Red Hat Product Security339 products fixed · 155 known affected

    ceph: privilege escalation by unprivileged users in a ceph-fuse mounted CephFS

    ceph-base as a component of Red Hat Ceph Storage 4 · ceph-common as a component of Red Hat Ceph Storage 4 · ceph-fuse as a component of Red Hat Ceph Storage 4

  • RHSA-2026:33154 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: Red Hat Ceph Storage

  • RHSA-2026:2769 Red Hat Product Security262 products fixed

    Red Hat Security Advisory: Red Hat Ceph Storage 7.1 security and bug fix updates

  • RHSA-2026:1536 Red Hat Product Security74 products fixed

    Red Hat Security Advisory: Red Hat Ceph Storage 9.0 Security and Enhancement update

Full record on NVD

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Published
2025-06-26
Last Modified
2026-04-15

Frequently asked questions

What is 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.

Is CVE-2025-52555 actively exploited?

Active exploitation of CVE-2025-52555 has not been confirmed. Its EPSS score was 0.2% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-52555?

CVE-2025-52555 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N.

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