A AegiFlow
CRITICALCVSS 9.8

CVE-2021-3177

CVE-2021-3177 updated by NVD

Modified
2026-10-16
Sources
nvd

Summary

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.

References

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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