CVE-2026-18638

MEDIUM 6.5

Velociraptor server crash via the SetPassword API

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-476 CWE-703
Vendor	rapid7
Product	velociraptor
Published	Aug 11, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Rapid7 / Velociraptor

0 < 0.77.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

docs.velociraptor.app: http://docs.velociraptor.app/announcements/advisories/cve-2026-18638/

Credits

Mayank Rajput (https://github.com/hackelite01)