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CVE-2026-114645

5.2 · MEDIUM

A 32-bit integer wraparound in the MongoDB C Driver's Windows-only Kerberos/SSPI authentication code can cause an undersized heap buffer to be allocated when an excessively long credential value is…

Published Oct 22, 2026CWE-190EPSS 0.17%

Overview

CVE-2026-114645 is a medium-severity vulnerability. It was published on October 22, 2026 and has a CVSS 3.1 base score of 5.2 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.2, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A 32-bit integer wraparound in the MongoDB C Driver's Windows-only Kerberos/SSPI authentication code can cause an undersized heap buffer to be allocated when an excessively long credential value is supplied in the client's connection configuration. A party able to control that client-side configuration, in conjunction with the affected authentication mechanism, can cause the driver to write outside the bounds of the allocated buffer. This may result in corruption of client process memory and denial of service of the client application. The issue affects only client builds compiled with the Windows-native authentication backend.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/mongodb/mongo-c-driver/releases/tag/1.30.14GitHubgithub.com/mongodb/mongo-c-driver/releases/tag/2.5.7GitHubgithub.com/mongodb/mongo-c-driver/security/advisories/GHSA-g9mw-2cwh-6hh9Refjira.mongodb.org/browse/CDRIVER-6421

How CyberStrike helps

Frequently asked questions

What is CVE-2026-114645?

CVE-2026-114645 is a medium-severity vulnerability. It was published on October 22, 2026 and has a CVSS 3.1 base score of 5.2 (MEDIUM).

How severe is CVE-2026-114645?

This vulnerability has a CVSS 3.1 base score of 5.2, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-114645?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-114645?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-114645 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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