CVE-2026-114645

mediumpriority · track · 0EPSS 0.002 · 6 %ileDEFR
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.17% (6th) EPSS
CVSS 5.2 · medium
Is it mine?
3 products
Check your exposure
Who says so?
2 sources
cert_bund · certfr

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

5.7
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.8–5.7

v3.15.2mediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:Hsecondary · cna@mongodb.comexploitability 0.5 · impact 4.7
v4.05.7mediumCVSS: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:Xsecondary · cna@mongodb.com
v4.01.8lowCVSS: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:U/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:Xsecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-190USCWE-190US
03

affected products (3)

Products and version ranges known to be affected.

04

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-4134MongoDB C Treiber: Schwachstelle ermöglicht Denial of Service und manipulation von DatenDeutsch2026-10-22csaf · cert_bundDE

    Ein lokaler Angreifer kann eine Schwachstelle in MongoDB C Treiber ausnutzen, um einen Denial of Service Angriff durchzuführen, und um Daten zu manipulieren.

  • CERTFR-2026-AVI-1386Multiples vulnérabilités dans les produits MongoDBFrançais2026-10-26vendor · certfrFR
05

sources

Which sources assert this record, and when.

cert_bundcertfrNVDCVE.orgMITRE
published 2026-10-22modified 2026-10-23
06

references (4) nvd

External citations — patches, advisories, analysis.

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