CVE-2026-114645

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.

CVSS v3 5.2 MEDIUM

5.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.5 / Impact : 4.7

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/mongodb/mongo-c-driver/releases/tag/1.30.14
https://github.com/mongodb/mongo-c-driver/releases/tag/2.5.7
https://github.com/mongodb/mongo-c-driver/security/advisories/GHSA-g9mw-2cwh-6hh9
https://jira.mongodb.org/browse/CDRIVER-6421

Configurations

No configuration.

History

22 Oct 2026, 21:17

Type	Values Removed	Values Added
References		() https://github.com/mongodb/mongo-c-driver/security/advisories/GHSA-g9mw-2cwh-6hh9 -

22 Oct 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-22 19:17

Updated : 2026-10-29 02:16

NVD link : CVE-2026-114645

Mitre link : CVE-2026-114645

CVE.ORG link : CVE-2026-114645

JSON object : View

Products Affected

No product.

CWE

CWE-190

Integer Overflow or Wraparound

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