CVE-2025-66262Public exploitNetwork attack vector

Arbitrary File Overwrite via Tar Extraction Path Traversal

Published Nov 26, 2025 · Updated Nov 26, 2025

Path traversal in Mozart FM Transmitter allows remote attackers to overwrite writable system files through a crafted settings archive. The restore_mozzi_memories.sh helper extracts a user-supplied .tgz archive into the filesystem root with tar -C / and does not validate archive paths. Exploitation requires placing the archive through an unauthenticated upload endpoint and invoking the unauthenticated restore interface, enabling replacement of writable configuration or web files and full device compromise.

CVSS severity9.3
Critical
EPSS probability1.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Mozart FM Transmitter allows remote attackers to overwrite writable system files through a crafted settings archive. The restore_mozzi_memories.sh helper extracts a user-supplied .tgz archive into the filesystem root with tar -C / and does not validate archive paths. Exploitation requires placing the archive through an unauthenticated upload endpoint and invoking the unauthenticated restore interface, enabling replacement of writable configuration or web files and full device compromise.

The record

CVE
CVE-2025-66262
Published
Nov 26, 2025
Updated
Nov 26, 2025
Vendor
DB Elettronica Telecomunicazioni S.p.A.
Product
Mozart FM Transmitter
Classifications
CWE-22, CAPEC-100, T0819
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

9.3GridwareCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H/AU:N
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-100Overflow Buffers
T0819Exploit Public-Facing Application

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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