CVE-2021-25645

Credential disclosure via unredacted logging

Published May 10, 2021 · Updated Aug 3, 2024

Cleartext logs in Couchbase Server before 6.0.5, 6.1.0 through 6.5.1, and 6.6.0 allow local users to read administrator credentials. Couchbase logging writes the @ns_server internal administrator password without redaction to cbcollect_info.log, debug.log, ns_couchdb.log, indexer.log, and stats.log. High local privileges and read access to those files are required, and previously written entries remain exposed in historical logs.

CVSS severity4.4
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext logs in Couchbase Server before 6.0.5, 6.1.0 through 6.5.1, and 6.6.0 allow local users to read administrator credentials. Couchbase logging writes the @ns_server internal administrator password without redaction to cbcollect_info.log, debug.log, ns_couchdb.log, indexer.log, and stats.log. High local privileges and read access to those files are required, and previously written entries remain exposed in historical logs.

The record

CVE
CVE-2021-25645
Published
May 10, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-312, T1552.001
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. May 10, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-312Cleartext Storage of Sensitive Information
T1552.001Credentials In Files

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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