VULNERABILITY INTELLIGENCE
CVE-2026-116014
CVSS score8.1 HIGH
EPSS probability0.43%
CISA KEVNot currently listed
Published2026-10-24
Last modified2026-10-29
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
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.
Weakness classification
- disclosure@vulncheck.com: CWE-190