Malicious code in tpreplacekillcpu (PyPI)

tpreplacekillcpu Updated 02 Oct 2025

Summary

25/02/2023
CRITICAL
No i
Critical
Not published

MAL-2023-7558: Malicious code in tpreplacekillcpu (PyPI). Affected versions are not published. No fix is published. How to fix ↓

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Background

The tpreplacekillcpu package is an open-source Python package available on PyPI. It is designed to replace the CPU with a custom implementation for testing purposes. The package allows users to simulate different CPU architectures and behaviors. However, the package has been found to contain malicious code, which can lead to the execution of spyware and information-stealing malware.

Vulnerability Detail

The tpreplacekillcpu package has been compromised by the EsqueleSquad group, who published nearly 6000 malicious PyPi and NPM packages. These packages include spyware and information-stealing malware. The malicious code in tpreplacekillcpu can potentially compromise the security and privacy of systems where it is installed. It is crucial to remove this package from affected systems to prevent any unauthorized access or data breaches.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall tpreplacekillcpu

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

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Workaround

There is no known workaround for this vulnerability. It is essential to remove the tpreplacekillcpu package to ensure the security of the system.

Conclusion

The tpreplacekillcpu package on PyPI has been found to contain malicious code that can execute spyware and information-stealing malware. It is crucial to remove this package from affected systems to ensure the security and privacy of the system. For further support on vulnerability remediation, please contact DevNack.com.

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FAQ

tpreplacekillcpu is an open-source Python package available on PyPI. It is used for simulating different CPU architectures and behaviors for testing purposes.

The tpreplacekillcpu package was compromised by the EsqueleSquad group, who published malicious versions of the package on PyPI.

The malicious code in tpreplacekillcpu can execute spyware and information-stealing malware, potentially compromising the security and privacy of affected systems.

You can remove the tpreplacekillcpu package by uninstalling it using the package manager or manually deleting the package files.

If you have the tpreplacekillcpu package installed, it is recommended to remove it immediately to prevent any potential security breaches.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

pip uninstall tpreplacekillcpu

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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