CVE-2026-77099: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in Commvault Commvault Cloud
Description
CVFS contained an input validation issue affecting command execution. Software customers upgrade to resolved maintenance release. Update CVFS.
CVSS v4.0
Score 9.3critical
Affected software
Commvault
Commvault Cloud
Commvault
Grid(HSX) CVFS
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-77099) in Commvault Cloud's CVFS component arises from improper neutralization of special elements used in OS commands (CWE-78). The flaw allows remote attackers to execute arbitrary OS commands due to insufficient input validation. The vulnerability affects multiple version ranges of Commvault Cloud prior to specific maintenance releases. The CVSS 4.0 score is 9.3 (critical), indicating network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. The vendor recommends upgrading to the resolved maintenance releases to address the issue.
Potential Impact
Successful exploitation enables remote attackers to execute arbitrary OS commands without authentication, leading to full compromise of confidentiality, integrity, and availability of the affected system. This can result in unauthorized data access, data modification, service disruption, or complete system takeover.
Mitigation Recommendations
A fix is available through resolved maintenance releases. Customers should upgrade affected Commvault Cloud CVFS versions to the latest maintenance releases that address this vulnerability. No additional mitigations are specified by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Commvault
- Date Reserved
- 2026-08-20T10:56:58.071Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ace415e2cdf04f656747dbc
Added to database: 10/13/2026, 14:34:06 UTC
Last enriched: 10/13/2026, 14:48:32 UTC
Last updated: 10/14/2026, 04:19:18 UTC
Views: 13
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