critical advisory March 23, 2026

TuneClone 2.20 SEH Buffer Overflow Vulnerability (CVE-2019-25603)

TuneClone 2.20 is vulnerable to a structured exception handler (SEH) buffer overflow, allowing local attackers to execute arbitrary code by supplying a malicious license code string via the application's license registration feature.

TuneClone 2.20 is susceptible to a structured exception handler (SEH) buffer overflow vulnerability identified as CVE-2019-25603. A local attacker can exploit this vulnerability by providing a specially crafted license code string to the application. The vulnerability exists due to insufficient bounds checking when processing the license code, allowing an attacker to overwrite the SEH chain. The attacker supplied input allows for arbitrary code execution by overwriting exception handlers…

Detection coverage 2

Detect TuneClone SEH Buffer Overflow

critical

Detects potential SEH buffer overflow exploitation attempts against TuneClone 2.20 by monitoring for process creation with suspicious command-line arguments indicating crafted license key injection.

sigma tactics: execution techniques: T1204.002 sources: process_creation, windows

Detect TuneClone Download from Official Site

info

Detects download of the TuneClone installer from the official website.

sigma tactics: reconnaissance sources: network_connection, windows

Detection queries are kept inside the platform. Get full rules →

Indicators of compromise

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