Bug 2464036 (CVE-2026-6536)

Summary: CVE-2026-6536 wireshark: Wireshark: Denial of Service via DLMS/COSEM protocol dissector infinite loop
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in Wireshark. A remote attacker could exploit this vulnerability by sending a specially crafted DLMS/COSEM protocol packet. This could lead to an infinite loop in the DLMS/COSEM protocol dissector, resulting in a Denial of Service (DoS) for the affected system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2464907    
Bug Blocks:    

Description OSIDB Bzimport 2026-04-30 07:02:52 UTC
DLMS/COSEM protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4