EUVD-2026-72725
GHSA-wxg5-wf9r-p36g
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable unauthenticated endpoint with no complexity; availability impact is high (service disruption), integrity impact low (metrics tampering), no confidentiality exposure.
Primary rating from Vendor (Commvault).
CVSS VectorVendor: Commvault
Lifecycle Timeline
2DescriptionCVE.org
Private Metrics Server contained a missing authentication condition affecting metrics upload functionality and service availability. Software customers upgrade to resolved maintenance release. Update Private Metrics Server.
AnalysisAI
Unauthenticated access to the Private Metrics Server component in Commvault Cloud allows network-adjacent or internet-facing attackers to interact with the metrics upload functionality without credentials. The CVSS 4.0 vector (PR:N, VA:H, VI:L) confirms the endpoint lacks authentication entirely, enabling service disruption and limited metrics data manipulation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required - the Private Metrics Server metrics upload endpoint lacks an authentication gate entirely, making this exploitable by any network-reachable client without credentials, session tokens, or prior foothold. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.8 reflects high availability impact (VA:H) and low integrity impact (VI:L) with no confidentiality exposure (VC:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Commvault Cloud to the resolved maintenance release identified in Commvault security advisory CV_2026_08_1 (https://documentation.commvault.com/securityadvisories/CV_2026_08_1.html). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all Commvault Cloud instances and document current component versions to confirm exposure scope. …
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External POC / Exploit Code
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