{"cve":"CVE-2025-66255","nvd":{"published":"2025-11-26T01:16:08.710","modified":"2026-10-18T20:10:00.110","status":"Analyzed","description":"Unauthenticated Arbitrary File Upload (upgrade_contents.php) 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 Missing signature validation allows uploading malicious firmware packages. \nThe firmware upgrade endpoint in `upgrade_contents.php` accepts arbitrary file uploads without validating file headers, cryptographic signatures, or enforcing .tgz format requirements, allowing malicious firmware injection. This endpoint also subsequently provides ways for arbitrary file uploads and subsequent remote code execution","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:N/SA:N","score":9.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-434","CWE-345"],"references":["https://www.abdulmhsblog.com/posts/webfmvulns/","https://www.abdulmhsblog.com/posts/webfmvulns/"],"products":["dbbroadcast:mozart_dds_next_1000_firmware","dbbroadcast:mozart_dds_next_100_firmware","dbbroadcast:mozart_dds_next_2000_firmware","dbbroadcast:mozart_dds_next_3000_firmware","dbbroadcast:mozart_dds_next_300_firmware","dbbroadcast:mozart_dds_next_30_firmware","dbbroadcast:mozart_dds_next_3500_firmware","dbbroadcast:mozart_dds_next_500_firmware","dbbroadcast:mozart_dds_next_50_firmware","dbbroadcast:mozart_dds_next_6000_firmware","dbbroadcast:mozart_dds_next_7000_firmware","dbbroadcast:mozart_next_1000_firmware","dbbroadcast:mozart_next_100_firmware","dbbroadcast:mozart_next_2000_firmware","dbbroadcast:mozart_next_3000_firmware","dbbroadcast:mozart_next_300_firmware","dbbroadcast:mozart_next_30_firmware","dbbroadcast:mozart_next_3500_firmware","dbbroadcast:mozart_next_500_firmware","dbbroadcast:mozart_next_50_firmware","dbbroadcast:mozart_next_6000_firmware","dbbroadcast:mozart_next_7000_firmware"],"source":"nvd","synced_at":"2026-10-19T22:16:02.354564667+00:00"},"epss":{"cve":"CVE-2025-66255","score":0.00379,"percentile":0.31604,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}