CVE-2026-97334
Received Received - Intake

Improper Data Handling in Commvault Products

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Commvault

Description
The network messaging layer contained improper handling of highly compressed data affecting service availability. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including CommServe server, Web Server, Command Center, MediaAgents, clients, and HyperScale.

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Meta Information

Published
2026-10-13
Last Modified
2026-10-13
Generated
2026-10-13
AI Q&A
2026-10-13
EPSS Evaluated
N/A
NVD
CVE-2026-97334
EUVD
EUVD-2026-98764

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
Commvault Commvault Cloud 11.46.0
Commvault Commvault Cloud 11.44.0
Commvault Commvault Cloud 11.40.0
Commvault Commvault Cloud 11.36.0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-409 The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output.

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Executive Summary

This vulnerability involves improper handling of highly compressed data in the network messaging layer, which can affect service availability. It impacts Commvault installations and requires upgrading to a resolved maintenance release.

Detection Guidance

To detect this vulnerability, check the installed Commvault version against the fixed releases listed in the advisory. Use the Command Center's Server listing page to verify resolved versions. For Linux, run 'rpm -qa | grep Commvault' or 'dpkg -l | grep Commvault'. For Windows, check 'Programs and Features' in Control Panel.

Impact Analysis

The vulnerability can lead to service disruptions or downtime due to improper handling of compressed data, potentially affecting the availability of Commvault services and data access.

Compliance Impact

This vulnerability could impact compliance with GDPR and HIPAA by disrupting service availability due to resource exhaustion, potentially leading to unauthorized access or data processing interruptions. Unpatched systems may fail to meet availability and security requirements under these regulations.

Mitigation Strategies

Update all Commvault installations including CommServe server, Web Server, Command Center, MediaAgents, clients, and HyperScale to the resolved maintenance release.

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