CVE-2026-93393

Summary

A heap-based buffer overflow exists in the TLS transport layer of the MongoDB C Driver when built with the Windows platform TLS backend. A remote endpoint that the client connects to can cause the driver to write uncontrolled data outside the bounds of a heap allocation while processing incoming encrypted traffic after the TLS handshake completes. No authentication or user interaction is required, because the affected processing occurs before any application-level authentication completes. Triggering this issue may lead to memory corruption in the client process, disclosure of adjacent heap memory, or termination of the process.

Affected Software

VendorProductVersion RangeStatus
MongoDB Inc.C Driver2.4.0affected
MongoDB Inc.C Driver2.3.0 <= 2.3.3affected
MongoDB Inc.C Driver2.2.0 <= 2.2.4affected
MongoDB Inc.C Driver2.1.0 <= 2.1.2affected
MongoDB Inc.C Driver2.0.0 <= 2.0.2affected
MongoDB Inc.C Driver1.30.0 <= 1.30.8affected
MongoDB Inc.C Driver1.29.0 <= 1.29.2affected
MongoDB Inc.C Driver1.28.0 <= 1.28.1affected
MongoDB Inc.C Driver1.27.0 <= 1.27.6affected
MongoDB Inc.C Driver1.26.0 <= 1.26.2affected
MongoDB Inc.C Driver1.25.0 <= 1.25.4affected
MongoDB Inc.C Driver1.24.0 <= 1.24.4affected

Weaknesses

  • CWE-787: CWE-787: Out-of-bounds Write

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References