radar

ONE Sentinel

securitySecurity/M365 SECURITY/CRIT

Developer-targeting campaign using malicious Next.js repositories

sourceMicrosoft Security Blog
calendar_todayFebruary 24, 2026
schedule1 min read
lightbulb

EXECUTIVE SUMMARY

Malicious Next.js Repositories Exploit Developer Workflows for RCE-to-C2 Attacks

Summary

A recent campaign has been identified where malicious Next.js repositories were used to execute a remote code execution (RCE) to command-and-control (C2) chain. This exploit targets developers by embedding threats within standard build workflows.

Key Points

  • The campaign specifically targets developers using Next.js repositories.
  • The attack leverages a covert RCE-to-C2 chain.
  • Malicious code is embedded in routine development tasks, making it difficult to detect.
  • The campaign highlights the risks of using third-party repositories in development environments.
  • The information was published on the Microsoft Security Blog.

Analysis

This campaign underscores the vulnerabilities inherent in using third-party repositories, particularly in environments where developers routinely integrate external code. The covert nature of the RCE-to-C2 chain demonstrates a sophisticated approach to hiding malicious activities within legitimate development processes, posing significant risks to developer environments.

Conclusion

IT professionals should exercise caution when incorporating third-party repositories into their workflows. Regular security audits and the use of trusted sources can mitigate the risks associated with such campaigns.