Velociraptor server crash via the SetPassword API (CVE-2026-18638) | HOL Guard CVE

Medium · CVSS 6.5CVE-2026-18638

Velociraptor server crash via the SetPassword API

Answer in brief

CVE-2026-18638 records a Medium severity (CVSS 6.5) vulnerability in Velociraptor server crash via the SetPassword API. The current sources do not mark it as known exploited. The current feed maps Rapid7/Velociraptor (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 11, 2026Updated Aug 28, 2026Source checked Sep 25, 2026First seen by HOL Aug 11, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Rapid7/Velociraptor (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Rapid7/Velociraptorgeneric	>=0 <0.77.2	0.77.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for Rapid7/Velociraptor.
Review the reported fix. Update Rapid7/Velociraptor to 0.77.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 11, 2026

Sources and claim methodology

Source referencedocs.velociraptor.app

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.