CVE-2025-66257Public exploitNetwork attack vector

Unauthenticated file deletion via unsanitized deletepatch parameter

Published Nov 26, 2025 · Updated Nov 26, 2025

Arbitrary file deletion in Mozart FM Transmitter models allows remote attackers to delete patch files through its web interface. The patch_contents.php handler concatenates the untrusted deletepatch value with /var/www/patch/ and passes the resulting path to file_exists and unlink without sanitization or an access-control check. No credentials or user interaction are required; deletion is bounded by the web process's filesystem permissions and can impair transmitter maintenance or operation.

CVSS severity9.2
Critical
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file deletion in Mozart FM Transmitter models allows remote attackers to delete patch files through its web interface. The patch_contents.php handler concatenates the untrusted deletepatch value with /var/www/patch/ and passes the resulting path to file_exists and unlink without sanitization or an access-control check. No credentials or user interaction are required; deletion is bounded by the web process's filesystem permissions and can impair transmitter maintenance or operation.

The record

CVE
CVE-2025-66257
Published
Nov 26, 2025
Updated
Nov 26, 2025
Vendor
DB Elettronica Telecomunicazioni S.p.A.
Product
Mozart FM Transmitter
Classifications
CWE-73, CAPEC-100, T1485
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=100
  2. Affected versionversion=1000
  3. Affected versionversion=2000
  4. Affected versionversion=30
  5. Affected versionversion=300
  6. Affected versionversion=3000
  7. Affected versionversion=3500
  8. Affected versionversion=50
  9. Affected versionversion=500
  10. Affected versionversion=6000
  11. Affected versionversion=7000

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DB Elettronica Telecomunicazioni S.p.A. · Mozart FM Transmitterversion=100; version=1000; version=2000; version=30; version=300; version=3000; version=3500; version=50; version=500; version=6000; version=7000

Published CVSS scores

9.2GridwareCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:H/SA:N
9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-73External Control of File Name or Path
CAPEC-100Overflow Buffers
T1485Data Destruction

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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