CVE-2026-116014 (GCVE-0-2026-116014)

Vulnerability from cvelistv5 – Published: 2026-10-24 11:40 – Updated: 2026-10-24 11:40
VLAI
Title
open62541 1.5.0 before 1.5.7 Integer Overflow Heap Buffer Overflow via Custom DataType
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.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6774 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
open62541 open62541 Affected: 1.5.0 , < 1.5.7 (semver)
    cpe:2.3:a:open62541:open62541:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-14 21:34
Credits
BUG|PWN Research Sadoc ADONON
Show details on NVD website
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          "url": "https://github.com/open62541/open62541/blob/v1.5.6/src/ua_types_definition.c#L274"
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        {
          "name": "open62541 v1.5.7 Release Notes",
          "tags": [
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          "url": "https://github.com/open62541/open62541/releases/tag/v1.5.7"
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}



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