Vulnerability · Published Aug 11, 2026 · Assigned by rapid7
CVE-2026-18638Velociraptor server crash via the SetPassword API
Medium 6.5
In plain English
A medium-severity null pointer dereference in Velociraptor from Rapid7. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 64.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Rapid7 | Velociraptor | 0 – before 0.77.2 |
Weakness: CWE-476, CWE-703 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H