Bug 2511285 (CVE-2026-67860)

Summary: CVE-2026-67860 open62541: open62541: Heap-based buffer overflow in HistoryRead path
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, an open-source OPC UA (Open Platform Communications Unified Architecture) toolkit. This vulnerability is a heap-based buffer overflow occurring in the default HistoryRead path when the default history database uses a memory backend. An attacker could exploit this to cause a denial of service, making the system unavailable, or potentially achieve arbitrary code execution, gaining unauthorized control.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2512026    
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Description OSIDB Bzimport 2026-08-04 23:01:57 UTC
open62541 1.5.5 contains a heap-based buffer overflow in the default HistoryRead path when the default history database is used with the memory backend.