Missing authentication in Commvault CVFS allows command execution
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
Commvault Cloud from 11.46.0 through 11.46.39, 11.44.0 through 11.44.24, 11.40.0 through 11.40.77 and 11.36.0 through 11.36.126, and Grid(HSX) CVFS from 5.0.1.0 through 5.0.14.4, are affected. CVFS lacks an authentication check on a critical function that runs commands (CWE-306). An unauthenticated attacker on an adjacent network can run commands and fully compromise confidentiality, integrity and availability.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Description from the CNA
CVFS contained a missing authentication condition affecting command execution. Software customers upgrade to resolved maintenance release. Update CVFS.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Commvault Cloud or Grid(HSX) CVFS. The source description advises customers to upgrade to a resolved maintenance release.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Timeline
- 2026-10-13 Threatist record created from CVE-2026-77096
- 2026-10-13 Alias added: GHSA-4p62-vj8p-fqvf
- 2026-10-14 Priority changed: MEDIUM → LOW
- 2026-10-15 Weakness changed · CISA ADP
- 2026-10-15 CISA SSVC decision points changed
More Commvault vulnerabilities
- TI-2025-24197 Commvault Command Center Innovation Release <= 11.38.25 Unathenticated Install Package Path Traversal KEVCVSS 4.0CRITICAL 9.3
- TI-2025-03473 Commvault Web Server unspecified vulnerability KEVCVSS 4.0HIGH 8.7
- TI-2021-13983 This vulnerability allows remote attackers to execute arbitrary code on affected… CVSS 3.1HIGH 8.8
- TI-2017-13252 A Command Injection issue was discovered in ContentStore/Base/CVDataPipe.dll in Commvault… CVSS 3.0CRITICAL 9.8
- TI-2021-13982 Unrestricted file upload in Commvault CommCell CVSS 3.1HIGH 8.8
- TI-2025-35673 Path traversal in Commvault CommCell CVSS 4.0HIGH 8.7
Sources
- CVE-2026-77096 · CVE Program
- CVE-2026-77096 · NVD
- FIRST EPSS
- GHSA-4p62-vj8p-fqvf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences