CVE-2026-6948: Unbounded Memory Allocation in VQLResponse Result-Set Writer

Published May 3, 2026
·
Updated

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.

Affected Software

1 affected component
Velocidex Velociraptor<0.76.4

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade velociraptor/server to a version that resolves this vulnerability.

    Fixed in 0.75.9
  2. Upgrade

    Upgrade velociraptor/server to a version that resolves this vulnerability.

    Fixed in 0.76.4

Event History

May 3, 2026
CVE Published
via MITRE·11:55 PM
Data Sourced
via MITRE·11:55 PM
RemedyDescriptionSeverityWeakness
May 4, 2026
Data Sourced
via NVD·12:16 AM
DescriptionSeverityWeakness
Mar 11, 58323
Event
via FIRST·04:52 AM
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Frequently Asked Questions

1

What is the severity of CVE-2026-6948?

CVE-2026-6948 has a severity level that can lead to resource exhaustion and potential server crashes.

2

How do I fix CVE-2026-6948?

To fix CVE-2026-6948, upgrade Velociraptor to version 0.76.4 or later.

3

Who is affected by CVE-2026-6948?

CVE-2026-6948 affects users of Velociraptor versions prior to 0.76.4.

4

What causes CVE-2026-6948?

CVE-2026-6948 is caused by unbounded memory allocation in the server's agent control channel.

5

What type of vulnerability is CVE-2026-6948?

CVE-2026-6948 is a resource exhaustion vulnerability that can lead to out-of-memory (OOM) conditions.

Company

Resources

Contact

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CVE-2026-6948 - Unbounded Memory Allocation in VQLResponse Result-Set Writer - SecAlerts