# CVE-2026-18638

## Summary

- **CVE ID:** CVE-2026-18638
- **Severity:** MEDIUM
- **CVSS Score:** 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-476, CWE-703
- **Published:** Aug 11, 2026
- **Last Modified:** Aug 11, 2026

## Description

Any authenticated Velociraptor user — including one holding only the readerrole — can terminate the entire server process with a single request, by calling SetPassword with a username that does not exist.

## Affected Products

- Rapid7 — Velociraptor (0)

## References

- [CNA](http://docs.velociraptor.app/announcements/advisories/cve-2026-18638/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._