Bug 2511251 (CVE-2026-67857)

Summary: CVE-2026-67857 open62541: open62541: Denial of Service via out-of-bounds read in client-side function
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 an out-of-bounds read vulnerability in the client-side function responseReadNamespacesArray() by sending a specially crafted network packet. This could lead to a denial of service, causing the application to crash and become unavailable.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2511511    
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Description OSIDB Bzimport 2026-08-04 22:01:38 UTC
open62541 1.5.5 contains an out-of-bounds read in the client-side function responseReadNamespacesArray() in src/client/ua_client_connect.c.