How severe is CVE-2021-25644?

CVE-2021-25644 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-25644 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25644?

CVE-2021-25644 primarily affects Couchbase Couchbase Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-25644?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-25644 published?

CVE-2021-25644 was published on 2021-05-19 and last updated on 2026-06-17.

CVE-2021-25644

CVE-2021-25644 is a high-severity vulnerability in Couchbase Couchbase Server with a CVSS 3.x base score of 7.5. 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-312.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-312
Affected product: Couchbase Couchbase Server
Published: 2021-05-19
Last modified: 2026-06-17

Description

An issue was discovered in Couchbase Server 5.x and 6.x through 6.6.1 and 7.0.0 Beta. Incorrect commands to the REST API can result in leaked authentication information being stored in cleartext in the debug.log and info.log files, and is also shown in the UI visible to administrators.

Frequently asked questions

What is CVE-2021-25644?: An issue was discovered in Couchbase Server 5.x and 6.x through 6.6.1 and 7.0.0 Beta. Incorrect commands to the REST API can result in leaked authentication information being stored in cleartext in the debug.log and info.log files, and is also shown in the UI visible to administrators.
How severe is CVE-2021-25644?: CVE-2021-25644 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-25644 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25644?: CVE-2021-25644 primarily affects Couchbase Couchbase Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-25644?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-25644 published?: CVE-2021-25644 was published on 2021-05-19 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:couchbase:couchbase_server:*:*:*:*:*:*:*:*
cpe:2.3:a:couchbase:couchbase_server:7.0.0:beta:*:*:*:*:*:*

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