Rapid7CVE-2026-18638

Rapid7 Velociraptor: null pointer dereference

CVE-2026-18638 · Published Aug 11, 2026 · updated Aug 28, 2026

Medium6.5

Fix: upgrade to 0.77.2 or later

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 versions

Package	Affected	Fixed in
Velociraptor Product	< 0.77.2	0.77.2

Details and references

CVSS 3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Severity from: the vendor (its own CVE record or advisory)
Weakness: CWE-476, CWE-703

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