CVE-2026-65423 Details
Description
An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to trigger an out-of-bounds write.
A vulnerability exists in the open62541 library by o6 Automation, specifically in the arrayDimensions product computation of the UA_Variant type. This vulnerability, caused by an integer overflow, may allow a remote attacker to manipulate array dimensions, leading to an out-of-bounds write. The issue is present in 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.
o6 Automation has released patches for this vulnerability. Users are advised to update to the latest version. The new version can be obtained by contacting o6 Automation or through their website.
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] |