CVE-2026-67856
High
Description
An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via crafted CreateSubscription, CreateMonitoredItems(Sampling), Publish, TransferSubscriptions, and DeleteSubscriptions requests
SeverityHigh
CVSS7.5
Exploit probability—
ProductOpen62541
PublishedAug 4, 2026
First seenAug 4, 2026
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| open62541 | v ≤ 1.5.5 | — |
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