CVE-2020-25660
No exploitation reported by the sources we read.
- Published2020-11-23
- Fixed in15.2.6 · 14.2.14
- WeaknessCWE-294
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A flaw was found in the Cephx authentication protocol in versions before 15.2.6 and before 14.2.14, where it does not verify Ceph clients correctly and is then vulnerable to replay attacks in Nautilus. This flaw allows an attacker with access to the Ceph cluster network to authenticate with the Ceph service via a packet sniffer and perform actions allowed by the Ceph service. This issue is a reintroduction of CVE-2018-1128, affecting the msgr2 protocol. The msgr 2 protocol is used for all communication except older clients that do not support the msgr2 protocol. The msgr1 protocol is not affected. The highest threat from this vulnerability is to confidentiality, integrity, and system availability.
Timeline
dates in UTC- 2020-11-2322:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-25660?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-25660?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 15.x | ≥ 15.0.0, < 15.2.6 | 15.2.6 | NVD |
| 14.2 | < 14.2.14 | 14.2.14 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.0 | = 2.0 | no fix published | NVD |
| 4.0 | = 4.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 33.x | = 33 | no fix published | NVD |
1 more product in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.18.8read 2026-10-23
- NVDCVSS 2.05.8read 2026-10-23
- CNAweakness (CWE)CWE-294read 2026-10-23
- NVDweakness (CWE)CWE-294read 2026-10-23
- FIRST EPSSEPSS score1.0 %2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2020-11-23
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2020-25660?
Is CVE-2020-25660 actively exploited?
What is the CVSS score for CVE-2020-25660?
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