CVE-2026-77097Network attack vector

Unauthenticated service disruption via metrics upload

Published Sep 8, 2026 · Updated Sep 8, 2026

Missing authentication in Commvault Cloud Private Metrics Server allows remote attackers to interrupt service via metrics uploads. The metrics upload function accepts network requests without authenticating the sender, allowing untrusted data to reach processing that affects availability. A reachable server is exploitable without credentials or user interaction; Commvault reports service-availability loss and limited metrics integrity impact.

CVSS severity8.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Commvault Cloud Private Metrics Server allows remote attackers to interrupt service via metrics uploads. The metrics upload function accepts network requests without authenticating the sender, allowing untrusted data to reach processing that affects availability. A reachable server is exploitable without credentials or user interaction; Commvault reports service-availability loss and limited metrics integrity impact.

The record

CVE
CVE-2026-77097
Published
Sep 8, 2026
Updated
Sep 8, 2026
Vendor
Commvault
Product
Commvault Cloud
Classifications
CWE-306, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11.36.0 <=11.36.122 changes=[{"at":"11.36.123","status":"unaffected"}]
  2. Affected versionversion=11.40.0 <=11.40.71 changes=[{"at":"11.40.72","status":"unaffected"}]
  3. Affected versionversion=11.44.0 <=11.44.19 changes=[{"at":"11.44.20","status":"unaffected"}]
  4. Affected versionversion=11.46.0 <=11.46.19 changes=[{"at":"11.46.20","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Commvault · Commvault Cloudversion=11.36.0 <=11.36.122 changes=[{"at":"11.36.123","status":"unaffected"}]; version=11.40.0 <=11.40.71 changes=[{"at":"11.40.72","status":"unaffected"}]; version=11.44.0 <=11.44.19 changes=[{"at":"11.44.20","status":"unaffected"}]; version=11.46.0 <=11.46.19 changes=[{"at":"11.46.20","status":"unaffected"}]

Published CVSS scores

8.8CommvaultCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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