CVE-2025-66263— Unauthenticated Arbitrary File Read via Null Byte Injection
Quick assessment
Affected
DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
DB Electronica Mozart FM Transmitter是意大利DB Electronica公司的一个专业级FM广播发射机系列。 DB Electronica Mozart FM Transmitter 30版本、50版本、100版本、300版本、500版本、1000版本、2000版本、3000版本、3500版本、6000版本和7000版本存在安全漏洞，该漏洞源于download_setting.php中空字节注入，可能导致任意文件读取。
Possible ATT&CK Techniques 1 AI
T1005 · Data from Local System
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I. Basic Information for CVE-2025-66263
Vulnerability Information
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Vulnerability Title
Unauthenticated Arbitrary File Read via Null Byte Injection
Source: CVE Program / CVE List V5
Vulnerability Description
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.
The `/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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
空字节或NULL字符转义处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
DB Electronica Mozart FM Transmitter 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DB Electronica Mozart FM Transmitter是意大利DB Electronica公司的一个专业级FM广播发射机系列。 DB Electronica Mozart FM Transmitter 30版本、50版本、100版本、300版本、500版本、1000版本、2000版本、3000版本、3500版本、6000版本和7000版本存在安全漏洞，该漏洞源于download_setting.php中空字节注入，可能导致任意文件读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| DB Electronica Telecomunicazioni S.p.A. | Mozart FM Transmitter | 30 | - |
|
II. Public POCs for CVE-2025-66263
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · DB Electronica Telecomunicazioni S.p.A. · 2025-11-26 · 14 CVEs total
| CVE-2025-66257 | Unauthenticated Arbitrary File Deletion (patch_contents.php) | |
| CVE-2025-66256 | Unauthenticated Arbitrary File Upload (patch_contents.php) | |
| CVE-2025-66252 | Infinite Loop Denial of Service via Failed File Deletion | |
| CVE-2025-66255 | Unauthenticated Arbitrary File Upload (upgrade_contents.php) | |
| CVE-2025-66253 | Unauthenticated OS Command Injection (start_upgrade.php) | |
| CVE-2025-66254 | Unauthenticated Arbitrary File Deletion (upgrade_contents.php) | |
| CVE-2025-66250 | Unauthenticated Arbitrary File Upload (status_contents.php) | |
| CVE-2025-66251 | Unauthenticated Path Traversal with Arbitrary File Deletion | |
| CVE-2025-66262 | Arbitrary File Overwrite via Tar Extraction Path Traversal | |
| CVE-2025-66259 | Authenticated Root Remote Code Execution through improper filtering of HTTP post request p | |
| CVE-2025-66258 | Stored Cross-Site Scripting via XML Injection | |
| CVE-2025-66260 | PostgreSQL SQL Injection (status_sql.php) | |
| CVE-2025-66261 | Unauthenticated OS Command Injection (restore_settings.php) |
IV. Related Vulnerabilities
Same product: Mozart FM Transmitter
-
CVE-2025-66262
Arbitrary File Overwrite via Tar Extraction Path Traversal -
CVE-2025-66261
Unauthenticated OS Command Injection (restore_settings.php) -
CVE-2025-66260
PostgreSQL SQL Injection (status_sql.php) -
CVE-2025-66259
Authenticated Root Remote Code Execution through improper fi -
CVE-2025-66258
Stored Cross-Site Scripting via XML Injection
Same vendor: DB Electronica Telecomunicazioni S.p.A.
-
CVE-2025-66262
Arbitrary File Overwrite via Tar Extraction Path Traversal -
CVE-2025-66261
Unauthenticated OS Command Injection (restore_settings.php) -
CVE-2025-66260
PostgreSQL SQL Injection (status_sql.php) -
CVE-2025-66259
Authenticated Root Remote Code Execution through improper fi -
CVE-2025-66258
Stored Cross-Site Scripting via XML Injection
Same weakness: CWE-158
V. Comments for CVE-2025-66263
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