SEPTEMBER 17, 2026
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Case File

CVE-2026-84964

MEDIUM · CVSS 5.9 EPSS 0.15%

Source: NVD + CISA KEV + EPSS · Published 2026-09-03 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

A double free vulnerability in the OpenSSL-based TLS certificate revocation checking of the MongoDB C Driver allows an unauthenticated attacker to exploit specially crafted certificate data during the handshake process. This can lead to unexpected termination of the client application, potentially disrupting services. Organizations using MongoDB with the C Driver should prioritize patching this vulnerability to mitigate the risk of service interruptions.

CVE
CVE-2026-84964
Severity
MEDIUM
CVSS
5.9
EPSS
0.15%
MongoDB OpenSSL

Original NVD Description

A double free in the OpenSSL-based TLS certificate revocation checking path of the MongoDB C Driver can be reached by a TLS endpoint that the client already trusts. During the handshake, specially formed certificate data can cause the same heap object to be released twice. An unauthenticated party acting as the trusted endpoint may cause the connecting client application to terminate unexpectedly.