CVE-2026-77096

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Missing Authentication in CVFS Command Execution

Publication date: 2026-10-13

Last updated on: 2026-10-14

Assigner: Commvault

Description

CVFS contained a missing authentication condition affecting command execution. Software customers upgrade to resolved maintenance release. Update CVFS.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-14

Generated

2026-10-19

AI Q&A

2026-10-13

EPSS Evaluated

2026-10-18

NVD

CVE-2026-77096

EUVD

EUVD-2026-98760

Affected Vendors & Products

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
Commvault	Grid(HSX)	CVFS 5.0.1.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

Executive Summary

CVFS had a missing authentication condition that allowed unauthorized command execution. This flaw could let attackers run commands without proper validation.

Detection Guidance

To detect CVE-2026-77096, check if your Commvault CVFS version is vulnerable by comparing it against fixed releases. Use the Command Center under Manage > Servers or run version-specific commands in the HSX shell for older versions. Verify if updates are installed by checking maintenance release numbers.

Impact Analysis

An attacker could exploit this to execute arbitrary commands on affected systems, potentially leading to data breaches, system compromise, or unauthorized access to sensitive information.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information.

Mitigation Strategies

Upgrade to the resolved maintenance release of CVFS as advised by the vendor. Ensure authentication conditions for command execution are properly enforced.

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