CVE-2026-114645

5.7 MEDIUM 0.2% exploit odds Fix listed Memory safety OS & kernel

What it is

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.

At a glance

Exploitability: Can be exploited locally on the machine with an admin-level account. High risk of service disruption.
Exploit odds: 0.2% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-10-21 21:57 UTC ReservedThe CVE id was reserved by its CNA
2026-10-22 19:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-10-29 02:16 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.2% in the next 30 days (EPSS).
Severity: 5.7 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2026-10-22 19:17 UTC
Last modified: 2026-10-29 02:16 UTC
Exploit probability: 0.2% · EPSS, next 30 days
Weakness: CWE-190 · Integer overflow
Record status: Awaiting Analysis

Attack profile CVSS 4.0 · 5.7

Attack vector: Local
Complexity: High
Attack requirements: Present
Privileges needed: High
User interaction: None
Confidentiality: Low
Integrity: Low
Availability: High

Raw vector

CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-114645.md and follow it. Check whether this project is affected by CVE-2026-114645. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record