Bug 2550681 (CVE-2026-75347)

Summary: CVE-2026-75347 opener: opener: Denial of Service via expired pointer dereference
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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OS: Linux   
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A flaw was found in opener. This flaw allows a remote attacker to cause a Denial of Service (DoS) due to an expired pointer dereference in the EtherNet/IP Common Packet Format (CPF) handling logic. By sending specially crafted network packets, an attacker can trigger invalid memory access, causing the application to crash.
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Description OSIDB Bzimport 2026-10-13 16:41:59 UTC
EIPStackGroup OpENer v2.3 and master up to commit 76b95cf contain an expired pointer dereference vulnerability in the EtherNet/IP Common Packet Format (CPF) handling logic. This allows a remote attacker to cause a denial of service.