All vulnerabilities

Servers and applications

CVE-2020-15523

In Python 3.6 through 3.6.10, 3.7 through 3.7.8, 3.8 through 3.8.4rc1, and 3.9 through 3.9.0b4 on Windows, a Trojan horse python3.dll might be used in cases where CPython is embedded in a native application. This occurs because python3X.dll may use an invalid search path for python3.dll loading (after Py_SetPath has been used). NOTE: this issue CANNOT occur when using python.exe from a standard…

Severity
High 7.8
Published
4 Jul 2020
Last changed
14 Oct 2026
Added to UpHeron
21 Oct 2026
Fixed in
3.5.10, 3.6.12, 3.7.9, 3.8.4
Sources
NVD

Affected software

SoftwareAffected versions
PythonServers and applications · cpe:a:python:python
  • Version 3.9.0-beta4
  • Version 3.9.0-beta3
  • Version 3.9.0-beta2
  • Version 3.9.0-beta1
All 15 release lines
  • From 3.5.0 before 3.5.10
  • From 3.6.0 before 3.6.12
  • From 3.7.0 before 3.7.9
  • From 3.8.0 before 3.8.4
  • Version 3.8.4-rc1
  • Version 3.9.0-alpha1
  • Version 3.9.0-alpha2
  • Version 3.9.0-alpha3
  • Version 3.9.0-alpha4
  • Version 3.9.0-alpha5
  • Version 3.9.0-alpha6
  • Version 3.9.0-beta1
  • Version 3.9.0-beta2
  • Version 3.9.0-beta3
  • Version 3.9.0-beta4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2020-15523
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2020-15523