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CVE-2020-25660

27
FAUCET Score

CVE-2020-25660 is a high-severity flaw in the Cephx authentication protocol affecting Ceph versions before 15.2.6 and 14.2.14, as well as various Red Hat and Fedora products. It allows an attacker on the Ceph cluster network to bypass authentication via replay attacks, leading to potential compromise of confidentiality, integrity, and availability. With a CVSS score of 8.8 (High), this vulnerability requires network access but no user interaction or privileges. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 14.2.14CPE matchmatch criteria
cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:*
>= 15.0.0, < 15.2.6CPE matchmatch criteria
cpe:2.3:a:redhat:ceph:*:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:redhat:ceph_storage:2.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:redhat:ceph_storage:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.02%
Probability of exploitation in next 30 days
EPSS Percentile
59.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0102 is in the 74th percentile among its peer group of 1,859 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 4.1Fixed in: ceph-2:14.2.8-115.el7cp
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 4.2Fixed in: ceph-2:14.2.11-95.el8cp
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Storage 4.6.0 on RHEL-8Fixed in: ocs4/cephcsi-rhel8:4.6-54.49cf5efdd.release_4.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Storage 4.6.0 on RHEL-8Fixed in: ocs4/mcg-core-rhel8:5.6.0-42.6a01c5fc0.5.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Storage 4.6.0 on RHEL-8Fixed in: ocs4/mcg-rhel8-operator:5.6.0-41.2279a46.5.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Storage 4.6.0 on RHEL-8Fixed in: ocs4/ocs-must-gather-rhel8:4.6-78.3b7455e4.release_4.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Storage 4.6.0 on RHEL-8Fixed in: ocs4/ocs-operator-bundle:4.6.2-1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Storage 4.6.0 on RHEL-8Fixed in: ocs4/ocs-rhel8-operator:4.6-78.3b7455e4.release_4.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Storage 4.6.0 on RHEL-8Fixed in: ocs4/rook-ceph-rhel8-operator:4.6-82.8c7ed584.release_4.6
View patch

Vendor Advisories (1)

redhatCVE-2020-25660Moderate

ceph: CEPHX_V2 replay attack protection lost

Nov 17, 2020

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
ceph.io / community/v15-2-6-octopus-released
Release NotesVendor Advisory
ceph.io / releases/v14-2-14-nautilus-released
Release NotesVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/UBC4KZ44QUQENTYZPVHORGL4K2KV5V4F
security.gentoo.org / glsa/202105-39
Third Party Advisory