CVE-2026-77094

Service interruption via out-of-bounds writing

Published Oct 13, 2026 · Updated Oct 13, 2026

Out-of-bounds writing in CvFWD in Commvault Cloud allows attackers to interrupt service availability via unspecified vectors. Commvault has not disclosed the affected input-processing operation or triggering input beyond identifying the CvFWD component. Authentication requirements and whether the interruption involves a crash or hang are undisclosed; the affected-platform table lists Linux and Windows.

CVSS severityUnavailable
Unscored
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

Out-of-bounds writing in CvFWD in Commvault Cloud allows attackers to interrupt service availability via unspecified vectors. Commvault has not disclosed the affected input-processing operation or triggering input beyond identifying the CvFWD component. Authentication requirements and whether the interruption involves a crash or hang are undisclosed; the affected-platform table lists Linux and Windows.

The record

CVE
CVE-2026-77094
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
Commvault
Product
Commvault Cloud
Classifications
T1499.004
Attack vector
Unavailable
Privileges
Unavailable

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=11.36.0 <=11.36.126 changes=[{"at":"11.36.127","status":"unaffected"}]
  2. Affected versionversion=11.40.0 <=11.40.77 changes=[{"at":"11.40.78","status":"unaffected"}]
  3. Affected versionversion=11.44.0 <=11.44.24 changes=[{"at":"11.44.25","status":"unaffected"}]
  4. Affected versionversion=11.46.0 <=11.46.29 changes=[{"at":"11.46.30","status":"unaffected"}]

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

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 <=11.46.29 changes=[{"at":"11.46.30","status":"unaffected"}]

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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