What’s Vulnerable › Vulnerabilities

CVE-2019-25603: TuneClone 2.20 Structured Exception Handler Buffer Overflow

• Severity: high (CVSS 8.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-22 · updated 2026-06-17
• Weakness: CWE-787

Description

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: 2.20

References

• http://www.tuneclone.com/
• http://www.tuneclone.com/tuneclone_setup.exe
• https://www.exploit-db.com/exploits/47012
• https://www.vulncheck.com/advisories/tuneclone-structured-exception-handler-buffer-overflow

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