What is CVE-2021-35943?

CVE-2021-35943 is a critical-severity vulnerability in Couchbase Couchbase_server, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-09-29.

How severe is CVE-2021-35943?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Couchbase Couchbase_server

CVE-2021-35943

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.

Vulnerability class: Broken Authentication

EPSS: 0.010 (59.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Couchbase Couchbase_server
N/a — versions n/a

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-35943?: CVE-2021-35943 is a critical-severity vulnerability in Couchbase Couchbase_server, classified under Improper Authentication. CVSS score: 9.8/10. Published 2021-09-29.
How severe is CVE-2021-35943?: Critical severity. CVSS v3 base score is 9.8 out of 10.