CVE-2019-25603: Tuneclone

High severity, CVSS 8.4. EPSS: 0.2% chance of exploitation in the next 30 days.

TuneClone 2.20 contains a structured exception handler (SEH) buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying a malicious license code string. Attackers can craft a payload with a controlled buffer, NSEH jump instruction, and SEH handler address pointing to a ROP gadget, then paste it into the license code field to trigger code execution and establish a bind shell.

Affected products

• Tuneclone Tuneclone: version 2.20 only

Published 2026-03-22. Last modified 2026-06-17.