Authenticated Root Remote Code Execution via improrer user input filtering in DB Electronica…
CVE-2025-66259 is a critical-severity improper input validation vulnerability in Mozart FM Transmitter from DB Electronica Telecomunicazioni S.p.A., with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Mozart FM Transmitter versions: 30; 50; 100, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.71% chance of exploitation within 30 days, higher than 54% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of Mozart FM Transmitter you run against the affected versions below, and install the vendor's latest release.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| DB Electronica Telecomunicazioni S.p.A. | Mozart FM Transmitter | 30; 50; 100; 300; 500; 1000; 2000; 3000; and 3 more ranges | Not stated |
| Dbbroadcast | Mozart Next 100 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 1000 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 2000 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 30 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 300 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 3000 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 3500 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 50 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 500 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 6000 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Next 7000 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 30 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 50 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 100 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 300 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 500 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 1000 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 2000 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 3000 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 3500 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 6000 Firmware | Not specified in the record | Not stated |
| Dbbroadcast | Mozart Dds Next 7000 Firmware | Not specified in the record | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 9.3 | Critical | CNA |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
Authenticated Root Remote Code Execution via improrer user input filtering 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 in main_ok.php user supplied data/hour/time is passed directly into date shell command
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
How developers prevent this class of flaw
- Consider using language-theoretic security (LangSec) techniques that characterize inputs using a formal language and build recognizers for that language. This effectively requires parsing to be a distinct layer that effectively enforces a boundary between raw input and internal data representations, instead of allowing parser code to be scattered throughout the program, where it could be subject to errors or inconsistencies that create weaknesses.
- Use an input validation framework such as Struts or the OWASP ESAPI Validation API. Note that using a framework does not automatically address all input validation problems; be mindful of weaknesses that could arise from misusing the framework itself (CWE-1173).
- Understand all the potential areas where untrusted inputs can enter the product, including but not limited to: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- abdulmhsblog.com/posts/webfmvulns/Exploit, Third Party Advisory
Other vulnerabilities in Mozart FM Transmitter
- 7.5 High severity
- 9.8 Critical severity
- 9.8 Critical severity
- 9.1 Critical severity
- 9.8 Critical severity
- 9.8 Critical severity
Recent Improper Input Validation vulnerabilities
- 8.1 High severity
- 7.7 High severity
- 7.7 High severity
- 8.8 High severity
- 7.1 High severity
- 9.8 Critical severity
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