CVE-2026-18638CWE-476CWE-703

CVE-2026-18638

Medium · published August 11, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
34.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00411 · 34.2th percentile
Weaknesses
CWE-476 · NULL Pointer Dereference; CWE-703 · Improper Check or Handling of Exceptional Conditions
Published
2026-08-11T20:17Z
References (1)
http://docs.velociraptor.app/announcements/advisories/cve-2026-18638/ · [email protected]
EPSS history
Timeline
  • 11 AUG 15:00Z
    Velociraptor server crash via the SetPassword API
    cvelistv5