CVE-2021-34994Network attack vector

Remote code execution via DataProvider JavaScript injection

Published Jan 13, 2022 · Updated Aug 4, 2024

Code injection in Commvault CommCell 11.22.22 allows remote attackers to execute arbitrary code via the DataProvider interface. The DataProvider class executes a user-supplied string as JavaScript without proper validation, allowing escape from the JavaScript sandbox into Java code running as NETWORK SERVICE. Authentication is nominally required but bypassable, so a remote attacker can reach the service and gain code execution with the service account's privileges.

CVSS severity8.8
High
EPSS probability5.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Commvault CommCell 11.22.22 allows remote attackers to execute arbitrary code via the DataProvider interface. The DataProvider class executes a user-supplied string as JavaScript without proper validation, allowing escape from the JavaScript sandbox into Java code running as NETWORK SERVICE. Authentication is nominally required but bypassable, so a remote attacker can reach the service and gain code execution with the service account's privileges.

The record

CVE
CVE-2021-34994
Published
Jan 13, 2022
Updated
Aug 4, 2024
Vendor
Commvault
Product
CommCell
Classifications
CWE-20, CWE-94, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=11.22.22

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Commvault · CommCellversion=11.22.22

Published CVSS scores

6.5NISTAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007Command and Scripting Interpreter: JavaScript

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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