Full Report
Commvault security advisory (AV26-895)
Analysis Summary
# Vulnerability: Commvault Command Center API Authentication Bypass
## CVE Details
- **CVE ID:** CVE-2026-07-1 (Internal Commvault Identifier)
- **CVSS Score:** 9.8 (Critical) *[Estimated based on "Authentication Bypass" classification]*
- **CWE:** CWE-287 (Improper Authentication)
## Affected Systems
- **Products:** Commvault Cloud / Command Center
- **Versions:**
- 11.36.0 prior to 11.36.123
- 11.40.0 prior to 11.40.72
- 11.44.0 prior to 11.44.20
- 11.46.0 prior to 11.46.20
- **Configurations:** Systems utilizing the Command Center API for management and orchestration.
## Vulnerability Description
This vulnerability involves a critical flaw in the authentication mechanism of the Commvault Command Center API. An attacker could potentially bypass security controls to gain unauthorized access to the API. Due to the nature of the Command Center, which manages backup, recovery, and data management tasks, an authentication bypass allows for unauthorized administrative actions without providing valid credentials.
## Exploitation
- **Status:** Not currently reported as exploited in the wild; however, the severity suggests high interest for threat actors.
- **Complexity:** Low
- **Attack Vector:** Network (Remote)
## Impact
- **Confidentiality:** Total (Full access to data management metadata and potentially backup contents)
- **Integrity:** Total (Ability to delete backups, modify policies, or alter security settings)
- **Availability:** Total (Ability to trigger mass deletion or encryption of managed data)
## Remediation
### Patches
Commvault has released the following security updates. Users are advised to upgrade to the relevant maintenance release immediately:
- **For 11.36:** Update to version 11.36.123 or later.
- **For 11.40:** Update to version 11.40.72 or later.
- **For 11.44:** Update to version 11.44.20 or later.
- **For 11.46:** Update to version 11.46.20 or later.
### Workarounds
- **Network Segmentation:** Restrict access to the Command Center API to trusted IP addresses only (VPN or management VLAN).
- **Disable API:** If the Command Center API is not actively used for automation, consider disabling external access until patches are applied.
## Detection
- **Indicators of Compromise:** Unusual API calls originating from unauthorized or external IP addresses; administrative actions (policy changes, data deletions) logged without corresponding authenticated user sessions.
- **Detection methods and tools:** Audit Commvault Web Server logs and `adminconsole.log` for anomalous status codes (e.g., successes following failed authentication attempts) or actions performed by the "System" account that appear out of cycle.
## References
- **Vendor advisory:** hxxps[://]documentation[.]commvault[.]com/securityadvisories/CV_2026_07_1[.]html
- **Security Bulletin:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/commvault-security-advisory-av26-895
- **Commvault Advisory Hub:** hxxps[://]documentation[.]commvault[.]com/securityadvisories/