How severe is CVE-2021-27925?

CVE-2021-27925 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-27925 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27925?

CVE-2021-27925 affects Couchbase Couchbase Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27925?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-27925 published?

CVE-2021-27925 was published on 2021-05-19 and last updated on 2026-06-17.

CVE-2021-27925

CVE-2021-27925 is a medium-severity vulnerability in Couchbase Couchbase Server with a CVSS 3.x base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Couchbase Couchbase Server
Published: 2021-05-19
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-27925?: 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.
How severe is CVE-2021-27925?: CVE-2021-27925 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-27925 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27925?: CVE-2021-27925 affects Couchbase Couchbase Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27925?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-27925 published?: CVE-2021-27925 was published on 2021-05-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:*

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