What’s Vulnerable › Vulnerabilities

CVE-2025-66262: Arbitrary File Overwrite via Tar Extraction Path Traversal

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-11-26 · updated 2026-10-18
• Weakness: CWE-22

Description

Arbitrary File Overwrite via Tar Extraction Path Traversal 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 Tar extraction with -C / allow arbitrary file overwrite via crafted archive. The `restore_mozzi_memories.sh` script extracts user-controlled tar archives with `-C /` flag, depositing contents to the filesystem root without path validation. When combined with the unauthenticated file upload vulnerabilities (CVE-01, CVE-06, CVE-07), attackers can craft malicious .tgz archives containing path-traversed filenames (e.g., `etc/shadow`, `var/www/index.php`) to overwrite critical system files in writable directories, achieving full system compromise.

Affected products

• Dbbroadcast Mozart Dds Next 1000 Firmware: all versions
• Dbbroadcast Mozart Dds Next 100 Firmware: all versions
• Dbbroadcast Mozart Dds Next 2000 Firmware: all versions
• Dbbroadcast Mozart Dds Next 3000 Firmware: all versions
• Dbbroadcast Mozart Dds Next 300 Firmware: all versions
• Dbbroadcast Mozart Dds Next 30 Firmware: all versions
• Dbbroadcast Mozart Dds Next 3500 Firmware: all versions
• Dbbroadcast Mozart Dds Next 500 Firmware: all versions
• Dbbroadcast Mozart Dds Next 50 Firmware: all versions
• Dbbroadcast Mozart Dds Next 6000 Firmware: all versions
• Dbbroadcast Mozart Dds Next 7000 Firmware: all versions
• Dbbroadcast Mozart Next 1000 Firmware: all versions
• Dbbroadcast Mozart Next 100 Firmware: all versions
• Dbbroadcast Mozart Next 2000 Firmware: all versions
• Dbbroadcast Mozart Next 3000 Firmware: all versions
• Dbbroadcast Mozart Next 300 Firmware: all versions
• Dbbroadcast Mozart Next 30 Firmware: all versions
• Dbbroadcast Mozart Next 3500 Firmware: all versions
• Dbbroadcast Mozart Next 500 Firmware: all versions
• Dbbroadcast Mozart Next 50 Firmware: all versions
• Dbbroadcast Mozart Next 6000 Firmware: all versions
• Dbbroadcast Mozart Next 7000 Firmware: all versions

References

• https://www.abdulmhsblog.com/posts/webfmvulns/

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