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RealTerm Serial Terminal 2.0.0.70 contains a structured exception handling (SEH) buffer overflow vulnerability in the Echo Port tab that allows local attackers to execute arbitrary code by supplying a malicious payload. Attackers can craft a buffer overflow payload with a POP POP RET gadget chain and shellcode that triggers code execution when pasted into the Port field and the Change button is clicked.
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Title: RealTerm: Serial Terminal de Realterm, Description: RealTerm Serial Terminal 2.0.0.70 contiene una vulnerabilidad de desbordamiento de búfer de manejo estructurado de excepciones (SEH) en la pestaña Echo Port que permite a atacantes locales ejecutar código arbitrario al proporcionar una carga útil maliciosa. Los atacantes pueden crear una carga útil de desbordamiento de búfer con una cadena de gadgets POP POP RET y shellcode que desencadena la ejecución de código cuando se pega en el campo Port y se hace clic en el botón Change.
VulnCheck: https://www.vulncheck.com/advisories/realterm-serial-terminal-buffer-overflow-seh Types: Third Party Advisory
New CVE Received from VulnCheck4/05/2026 5:16:46 PM
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Description
RealTerm Serial Terminal 2.0.0.70 contains a structured exception handling (SEH) buffer overflow vulnerability in the Echo Port tab that allows local attackers to execute arbitrary code by supplying a malicious payload. Attackers can craft a buffer overflow payload with a POP POP RET gadget chain and shellcode that triggers code execution when pasted into the Port field and the Change button is clicked.