CVE-2026-7372
Full vulnerability record from the local CVENow database.
Description
A stack overflow vulnerability exists in the WebCam Server Login functionality of GeoVision GV-VMS V20 20.0.2. A specially crafted HTTP request can lead to an arbitrary code execution. An attacker can make an unauthenticated HTTP request to trigger this vulnerability. #### Stack-overflow via unconstrained sscanf The call to `sscanf` at [1] to split the `Buffer` variable into the `username` and `password` variables doesn't limit the size of the extracted content to match the destination buffers' sizes. In this case, if either the username or password decoded from the authorization string exceeds `40` characters (the size the stack variables `username` and `password`) then a stack overflow will occur. The data is controlled by an attacker, but sronger constraints (e.g. no null bytes) may make exploitation harder. A successful attack could lead to full code execution as SYSTEM on the machine running the service.
View original CVE JSON
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"published": "2026-05-04T01:16:04.730",
"lastModified": "2026-10-26T20:10:00.160",
"vulnStatus": "Analyzed",
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"value": "A stack overflow vulnerability exists in the WebCam Server Login functionality of GeoVision GV-VMS V20 20.0.2. A specially crafted HTTP request can lead to an arbitrary code execution. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.\n\n#### Stack-overflow via unconstrained sscanf\n\nThe call to `sscanf` at [1] to split the `Buffer` variable into the `username` and `password` variables doesn't limit the size of the extracted content to match the destination buffers' sizes. In this case, if either the username or password decoded from the authorization string exceeds `40` characters (the size the stack variables `username` and `password`) then a stack overflow will occur. \n\n\n\nThe data is controlled by an attacker, but sronger constraints (e.g. no null bytes) may make exploitation harder. A successful attack could lead to full code execution as SYSTEM on the machine running the service."
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"value": "Una vulnerabilidad de desbordamiento de pila existe en la funcionalidad de inicio de sesión del servidor de la cámara web de GeoVision GV-VMS V20 20.0.2. Una solicitud HTTP especialmente diseñada puede conducir a una ejecución de código arbitrario. Un atacante puede realizar una solicitud HTTP no autenticada para activar esta vulnerabilidad.\n\n#### Desbordamiento de pila a través de sscanf sin restricciones\n\nLa llamada a “sscanf” en [1] para dividir la variable “Buffer” en las variables “username” y “password” no limita el tamaño del contenido extraído para que coincida con los tamaños de los búferes de destino. En este caso, si el nombre de usuario o la contraseña decodificados de la cadena de autorización excede los “40” caracteres (el tamaño de las variables de pila “username” y “password”), entonces ocurrirá un desbordamiento de pila.\n\nLos datos son controlados por un atacante, pero restricciones más fuertes (por ejemplo, sin bytes nulos) pueden dificultar la explotación. Un ataque exitoso podría conducir a la ejecución completa de código como SYSTEM en la máquina que ejecuta el servicio."
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