CVE-2026-77096

Unauthenticated command execution via missing authentication

Published Oct 13, 2026 · Updated Oct 13, 2026

Missing authentication in Commvault File System (CVFS) 5.0.1.0 through 5.0.14.4 allows attackers to execute commands via adjacent access. Commvault identifies command execution as the affected function but does not disclose the endpoint, protocol, or omitted authentication check. Attackers require adjacent-network access without credentials or user interaction; additional required attack conditions and execution privileges are undisclosed.

CVSS severity7.7
High
EPSS probability0.23%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Commvault File System (CVFS) 5.0.1.0 through 5.0.14.4 allows attackers to execute commands via adjacent access. Commvault identifies command execution as the affected function but does not disclose the endpoint, protocol, or omitted authentication check. Attackers require adjacent-network access without credentials or user interaction; additional required attack conditions and execution privileges are undisclosed.

The record

CVE
CVE-2026-77096
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
Commvault
Product
Commvault File System (CVFS)
Classifications
CWE-306, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 13, 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=5.0.1.0 <=5.0.14.4 changes=[{"at":"5.0.14.5","status":"unaffected"}]

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Commvault · Commvault File System (CVFS)version=5.0.1.0 <=5.0.14.4 changes=[{"at":"5.0.14.5","status":"unaffected"}]
Commvault · Commvault Cloudversion=11.36.0 <=11.36.126 changes=[{"at":"11.36.127","status":"unaffected"}]; version=11.40.0 <=11.40.77 changes=[{"at":"11.40.78","status":"unaffected"}]; version=11.44.0 <=11.44.24 changes=[{"at":"11.44.25","status":"unaffected"}]; version=11.46.0 <=11.46.39 changes=[{"at":"11.46.40","status":"unaffected"}]

Published CVSS scores

7.7CommvaultCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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