Hunting-Queries-Detection-Rules/DefenderXDR/CVE-2025-21298 Zero-Click RCE.kql at main · SlimKQL/Hunting-Queries-Detection-Rules · GitHub

Source: GitHub Author: unknown URL: https://github.com/SlimKQL/Hunting-Queries-Detection-Rules/blob/main/DefenderXDR/CVE-2025-21298%20Zero-Click%20RCE.kql

  1. ONE SENTENCE SUMMARY: A potential zero-click remote code execution (RCE) vulnerability, CVE-2025-21298, has been identified with detailed metadata in a file.

  2. MAIN POINTS:

  3. CVE-2025-21298 refers to a zero-click remote code execution vulnerability.

  4. The vulnerability requires no user interaction for exploitation.

  5. A file named “CVE-2025-21298 Zero-Click RCE.kql” contains metadata about the issue.

  6. The file comprises 18 lines, 16 of which contain executable code.

  7. The total file size is 648 bytes.

  8. This vulnerability could pose significant risks to affected systems.

  9. The file appears to be hosted in a repository for collaborative access.

  10. Specific actions on the file might currently be restricted.

  11. Users are required to reload their sessions when switching accounts or logging in/out.

  12. The vulnerability is critical for cybersecurity teams to address promptly.

  13. TAKEAWAYS:

  14. Zero-click vulnerabilities are particularly dangerous as they require no user interaction.

  15. CVE-2025-21298 needs urgent attention from developers and security teams.

  16. Metadata in the file provides essential insights for mitigating the vulnerability.

  17. Restricted file actions suggest controlled access, emphasizing its sensitivity.

  18. Collaborative environments must ensure proper session management to safeguard against risks.