HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-116014 — open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStr...

·Source: NIST NVD

Updated:

Executive Summary

open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions. A malicious OPC UA server can supply DataType definitions via UA_Client_getRemoteDataTypes(), causing decodeBinaryStructure() to overflow the heap, crashing clients or enabling code execution.

Analysis

open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions. A malicious OPC UA server can supply DataType definitions via UA_Client_getRemoteDataTypes(), causing decodeBinaryStructure() to overflow the heap, crashing clients or enabling code execution. CVSS Score: 8.1. Published: 2026-10-24T12:16:57.607.

Indicators of Compromise (1)

CVE (1)
CVE-2026-116014
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Oct 24, 2026. Verified by: NIST.

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