CVE-2026-67856: n/a
A denial of service vulnerability exists in open62541 version 1.5.5 and earlier. It can be triggered remotely by sending specially crafted requests related to subscription and monitored item management, including CreateSubscription, CreateMonitoredItems (Sampling), Publish, TransferSubscriptions, and DeleteSubscriptions. No CVSS score or patch information is currently available.
AI Analysis
Technical Summary
CVE-2026-67856 describes a denial of service vulnerability in open62541 versions 1.5.5 and before. The flaw allows a remote attacker to cause a denial of service by sending crafted OPC UA service requests involving subscription and monitored item operations such as CreateSubscription, CreateMonitoredItems (Sampling), Publish, TransferSubscriptions, and DeleteSubscriptions. The vulnerability is publicly known but lacks detailed CVSS scoring and vendor remediation information at this time.
Potential Impact
Successful exploitation results in denial of service conditions on the affected open62541 server, potentially disrupting OPC UA communication and related industrial or automation processes. There is no indication of code execution or data disclosure from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting exposure of the open62541 service to untrusted networks and monitoring for unusual subscription-related requests.
CVE-2026-67856: n/a
Description
A denial of service vulnerability exists in open62541 version 1.5.5 and earlier. It can be triggered remotely by sending specially crafted requests related to subscription and monitored item management, including CreateSubscription, CreateMonitoredItems (Sampling), Publish, TransferSubscriptions, and DeleteSubscriptions. No CVSS score or patch information is currently available.
Affected software
pkg:github/open62541/open62541Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-67856 describes a denial of service vulnerability in open62541 versions 1.5.5 and before. The flaw allows a remote attacker to cause a denial of service by sending crafted OPC UA service requests involving subscription and monitored item operations such as CreateSubscription, CreateMonitoredItems (Sampling), Publish, TransferSubscriptions, and DeleteSubscriptions. The vulnerability is publicly known but lacks detailed CVSS scoring and vendor remediation information at this time.
Potential Impact
Successful exploitation results in denial of service conditions on the affected open62541 server, potentially disrupting OPC UA communication and related industrial or automation processes. There is no indication of code execution or data disclosure from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting exposure of the open62541 service to untrusted networks and monitoring for unusual subscription-related requests.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-07-30T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a725cbabf8831d5398274d4
Added to database: 08/04/2026, 21:42:18 UTC
Last enriched: 08/04/2026, 21:59:23 UTC
Last updated: 08/05/2026, 01:21:28 UTC
Views: 7
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