CVE-2025-66262
CWE-22Published: November 26, 2025· Updated: Jun 17, 2026
Official 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.
Risk Analysis
DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitters are vulnerable to arbitrary file overwrite via a path traversal flaw during tar extraction, combined with unauthenticated file upload vulnerabilities. This critical vulnerability, with a CVSS score of 9.8, allows an unauthenticated attacker to overwrite critical system files, potentially leading to full system compromise. The flaw is remotely exploitable.
No public exploit is known for this vulnerability. The flaw is remotely exploitable due to its network attack vector and low attack complexity.
Implement strict input validation and path sanitization for file uploads and tar archive extractions. Ensure all file operations are authenticated and authorized.
Technical Analysis
CVE-2025-66262 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (1)
Quick Facts
Related CVEs (CWE-22)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-66262 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts