Bug 2511267 (CVE-2026-67856)

Summary: CVE-2026-67856 open62541: open62541: Denial of Service via crafted subscription requests
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in open62541. A remote attacker could exploit this vulnerability by sending specially crafted subscription-related requests, such as CreateSubscription or Publish. This could lead to a denial of service (DoS), making the affected system unavailable to legitimate users.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2511510    
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Description OSIDB Bzimport 2026-08-04 22:02:36 UTC
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