CVE-2026-6948

Unbounded Memory Allocation in VQLResponse Result-Set Writer

Published May 3, 2026 CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed
Description
Velociraptor versions prior to 0.76.4 contain a resource exhaustion vulnerability in the server's agent control channel.



This allows a compromised or rogue Velociraptor client to crash the server via out-of-memory (OOM) by sending crafted messages through the normal client communication channel.

Remediation

Vendor Solution

To remediate, you will need to  upgrade your server https://www.velociraptor-docs.org/docs/deployment/server/upgrades/#upgrading-a-server-in-place-upgrade  to the latest version of your release: * For 0.76 releases, upgrade immediately to  v0.76.4 https://github.com/Velocidex/velociraptor/releases/download/v0.76/velociraptor-v0.76.4-linux-amd64 * For 0.75 releases, upgrade immediately to  v0.75.9 https://github.com/Velocidex/velociraptor/releases/download/v0.75/velociraptor-v0.75.9-linux-amd64

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Rapid7
Rapid7 velociraptor
Vendors & Products Rapid7
Rapid7 velociraptor
Type Values Removed Values Added
Description Velociraptor versions prior to 0.76.4 contain a resource exhaustion vulnerability in the server's agent control channel. This allows a compromised or rogue Velociraptor client to crash the server via out-of-memory (OOM) by sending crafted messages through the normal client communication channel.
Title Unbounded Memory Allocation in VQLResponse Result-Set Writer
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
rapid7
Published
Updated
Jun 19, 2026, 12:45 PM
Reserved
Apr 24, 2026, 3:35 AM
Status
Awaiting Analysis
Published
May 4, 2026, 12:16 AM
Modified
Oct 25, 2026, 11:10 PM