{"uuid": "f2a6d6ff-011e-49a1-82b3-2793203dac5d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-3177", "type": "published-proof-of-concept", "source": "https://t.me/oleg_log/4151", "content": "CVE-2021-3177 Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to remote code execution in certain Python applications that accept floating-point numbers as untrusted input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used unsafely\n\n>>> import ctypes\n>>> x = ctypes.c_double.from_param(1e300)\n>>> repr(x)\nSegmentation fault", "creation_timestamp": "2026-08-02T00:00:24.187084Z"}