CVE-2026-65423
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductO6 Automation Open62541
PublishedJul 30, 2026
First seenJul 30, 2026
Weakness typeCWE-190Integer overflow
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| o6 Automation open62541 | 1.3.0 ≤ v ≤ 1.3.17, 1.4.0 ≤ v ≤ 1.4.16, 1.5.0 ≤ v ≤ 1.5.4, master | — |
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