Medium severity · published Jun 18, 2025
CVE-2025-49015
The Couchbase .NET SDK (client library) before 3.7.1 does not properly enable hostname verification for TLS certificates
4.9
CVSS
0.2%
EPSS
No
On KEV
Description
The Couchbase .NET SDK (client library) before 3.7.1 does not properly enable hostname verification for TLS certificates. In fact, the SDK was also using IP addresses instead of hostnames due to a configuration option that was incorrectly enabled by default.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
.net Sdk · Couchbase
through 3.7.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-49015
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-49015
Release Notes
https://docs.couchbase.com/server/current/release-notes/relnotes.html
Issue Tracking
https://forums.couchbase.com/tags/security
Vendor Advisory
https://www.couchbase.com/alerts/