HOMEVULNERABILITIESCVE-2021-27925
MEDIUM

CVE-2021-27925

CWE-362Published: May 19, 2021· Updated: Jun 17, 2026

4.4
CVSS v3.1

Official Description

An issue was discovered in Couchbase Server 6.5.x and 6.6.x through 6.6.1. When using the View Engine and Auditing is enabled, a crash condition can (depending on a race condition) cause an internal user with administrator privileges, @ns_server, to have its credentials leaked in cleartext in the ns_server.info.log file.

NVD Source

Technical Analysis

CVE-2021-27925 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 4.4.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

couchbase1 product(s)
couchbase server
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.couchbase.com/downloads
ADVISORYhttps://www.couchbase.com/resources/security#SecurityAlerts
ADVISORYhttps://www.couchbase.com/downloads
ADVISORYhttps://www.couchbase.com/resources/security#SecurityAlerts

All References (4)

→
https://www.couchbase.com/downloadsProduct · Vendor Advisory
→
https://www.couchbase.com/resources/security#SecurityAlertsVendor Advisory
→
https://www.couchbase.com/downloadsProduct · Vendor Advisory
→
https://www.couchbase.com/resources/security#SecurityAlertsVendor Advisory

Quick Facts

CVE IDCVE-2021-27925
CVSS Score4.4 / 10
SeverityMEDIUM
WeaknessCWE-362
CISA KEVNo
Affected1 vendor(s)
PublishedMay 19, 2021

Related CVEs (CWE-362)

CVE-2014-0703
10.0
CVE-2010-1228
10.0
CVE-2015-8556
10.0
CVE-2008-6598
10.0
CVE-2020-1660
9.9
CVE-2025-48751
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-27925 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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