CVE-2026-63559 Details
Description
An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to read out-of-bounds heap memory, potentially disclosing sensitive information.
A vulnerability exists in o6 Automation open62541 due to an integer overflow in the UA_Variant arrayDimensions product computation. This flaw may enable a remote attacker to read out-of-bounds heap memory, potentially disclosing sensitive information. The vulnerability affects open62541 versions 1.3.0 through 1.3.17, 1.4.0 through 1.4.16, 1.5.0 through 1.5.4, and the master branch, on both Windows and Linux.
Users are advised to update to the latest version of open62541, where this vulnerability has been addressed. For more information, contact o6 Automation.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 31, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-190 | Integer Overflow or Wraparound | [email protected] |
Affected Products
No affected product data is available for this CVE.
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 31, 2026 | CVE Modified | CISA-ADP |
| Jul 30, 2026 | New CVE Received | [email protected] |