CVE-2026-116014
highopen62541 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 struct…
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:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/open62541/open62541/blob/v1.5.6/src/ua_types_definition.c#L274 disclosure@vulncheck.com
- https://github.com/open62541/open62541/commit/0cf4806768c493bc6ccffcd4419da24153b970ec disclosure@vulncheck.com
- https://github.com/open62541/open62541/pull/8298 disclosure@vulncheck.com
- https://github.com/open62541/open62541/pull/8302 disclosure@vulncheck.com
- https://github.com/open62541/open62541/releases/tag/v1.5.7 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/open62541-1.5.0-before-1.5.7-integer-overflow-heap-bu... disclosure@vulncheck.com