CVE-2021-35943

9.8 criticalEPSS 1.1%

Critical (9.8) in couchbase couchbase server. EPSS 1.1% chance of exploitation in the next 30 days.

Couchbase Server 6.5.x and 6.6.x through 6.6.2 has Incorrect Access Control. Externally managed users are not prevented from using an empty password, per RFC4513.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2021-09-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

couchbase:couchbase_server

References

https://docs.couchbase.com/server/current/release-notes/relnotes.html
https://www.couchbase.com/alerts
https://docs.couchbase.com/server/current/release-notes/relnotes.html
https://www.couchbase.com/alerts

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