CVE-2026-77097

Status: AnalyzedHigh (8.8)—

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.

CVSS

Version: 4.0
Vector: 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
Base score: 8.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.47%
Percentile among all scored CVEs: 38
Score date: 10/5/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access85 %
Secondary impactT1499 Endpoint Denial of Serviceimpact70 %

Acceso remoto sin autenticación (CWE-306) a servidor métrico expuesto en red. VI:L + VA:H sugiere modificación de disponibilidad (DoS) y acceso a credenciales/sesiones sin autenticar.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Filter Network Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Affected technologies (1)

Commvault — Commvault

CWEs

CWE-306

References

https://documentation.commvault.com/securityadvisories/CV_2026_08_1.html

Raw JSON (NVD)

Show

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