Bug 2498279 (CVE-2026-15165)

Summary: CVE-2026-15165 wireshark: Wireshark: Denial of Service via TLS ECH decryptor crash
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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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A flaw was found in Wireshark. This vulnerability allows a remote attacker to cause a denial of service by crafting a malicious TLS Encrypted Client Hello (ECH) packet. When Wireshark attempts to decrypt this malformed packet, it can lead to a crash of the application, making it unavailable.
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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: 2498402    
Bug Blocks:    

Description OSIDB Bzimport 2026-07-08 22:01:34 UTC
TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service