Which versions of PHP are affected by CVE-2025-66254?

Organizations using DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter face notable risk from CVE-2025-66254 rated CVSS 7.8.

Is there a public PoC exploit available for CVE-2025-66254?

Yes, a public proof-of-concept exploit is available for CVE-2025-66254. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-66254?

Within 7 days: Identify all affected systems running DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitte and apply vendor patches promptly. Monitor vendor channels for patch availability.

PHP CVE-2025-66254

Q: What is the CVSS score of CVE-2025-66254?

CVE-2025-66254 has a CVSS 4.0 base score of 7.8 (High). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:H/SA:H/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. EPSS exploitation probability: 0.2%.

HIGH

External Control of File Name or Path (CWE-73)

2025-11-26 b7efe717-a805-47cf-8e9a-921fca0ce0ce

7.8

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:H/SA:H/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:H/SA:H/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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:24 vuln.today

PoC Detected

Dec 03, 2025 - 16:47 vuln.today

Public exploit code

CVE Published

Nov 26, 2025 - 01:16 nvd

HIGH 7.8

DescriptionCVE.org

Unauthenticated Arbitrary File Deletion (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 The deleteupgrade parameter allows unauthenticated deletion of arbitrary files.

The deleteupgrade parameter in /var/www/upgrade_contents.php allows unauthenticated deletion of arbitrary files in /var/www/upload/ without any extension restriction or path sanitization, enabling attackers to remove critical system files.

AnalysisAI

Unauthenticated Arbitrary File Deletion (upgrade_contents.php) in DB Electronica Telecomunicazioni S.p.A. Rated high severity (CVSS 7.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-73. Unauthenticated Arbitrary File Deletion (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 The deleteupgrade parameter allows unauthenticated deletion of arbitrary files. The deleteupgrade parameter in /var/www/upgrade_contents.php allows unauthenticated deletion of arbitrary files in /var/www/upload/ without any extension restriction or path sanitization, enabling attackers to remove critical system files. Affected products include: Dbbroadcast Mozart Next 100 Firmware, Dbbroadcast Mozart Next 1000 Firmware, Dbbroadcast Mozart Next 2000 Firmware, Dbbroadcast Mozart Next 30 Firmware, Dbbroadcast Mozart Next 300 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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CVE-2025-66254 vulnerability details – vuln.today

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PHP CVE-2025-66254

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code