Couchbase .NET SDK up to 3.7.0 TLS Certificate Validation certificate host validation

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Couchbase .NET SDK up to 3.7.0. It has been rated as critical. Affected by this issue is some unknown functionality of the component TLS Certificate Validation Handler. Performing a manipulation results in certificate host validation. This vulnerability is known as CVE-2025-49015. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Couchbase .NET SDK up to 3.7.0. It has been classified as problematic. This affects an unknown function of the component TLS Certificate Validation Handler. The manipulation with an unknown input leads to a certificate host validation vulnerability. CWE is classifying the issue as CWE-297. The product communicates with a host that provides a certificate, but the product does not properly ensure that the certificate is actually associated with that host. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at forums.couchbase.com. This vulnerability is uniquely identified as CVE-2025-49015 since 05/30/2025. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

Upgrading to version 3.7.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-18625). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Certificate host validation
CWE: CWE-297 / CWE-295 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: .NET SDK 3.7.1

Timelineinfo

05/30/2025 CVE reserved
06/18/2025 +19 days Advisory disclosed
06/18/2025 +0 days VulDB entry created
06/23/2025 +5 days VulDB entry last update

Sourcesinfo

Advisory: forums.couchbase.com
Status: Confirmed

CVE: CVE-2025-49015 (🔒)
GCVE (CVE): GCVE-0-2025-49015
GCVE (VulDB): GCVE-100-313215
EUVD: 🔒

Entryinfo

Created: 06/18/2025 16:43
Updated: 06/23/2025 23:52
Changes: 06/18/2025 16:43 (55), 06/18/2025 18:28 (1), 06/23/2025 23:52 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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