CVE-2021-22719Network attack vector

SYSTEM code execution via arbitrary file upload

Published Apr 13, 2021 · Updated Aug 3, 2024

Path traversal in Schneider Electric C-Bus Toolkit 1.15.7 and earlier allows remote authenticated users to execute code via file upload. C-Gate 2 command processing fails to validate user-supplied upload paths, allowing arbitrary files to be placed outside the intended directory. Successful exploitation runs code as SYSTEM, and ZDI reports that the service authentication mechanism can be bypassed.

CVSS severity8.8
High
EPSS probability40.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Schneider Electric C-Bus Toolkit 1.15.7 and earlier allows remote authenticated users to execute code via file upload. C-Gate 2 command processing fails to validate user-supplied upload paths, allowing arbitrary files to be placed outside the intended directory. Successful exploitation runs code as SYSTEM, and ZDI reports that the service authentication mechanism can be bypassed.

The record

CVE
CVE-2021-22719
Published
Apr 13, 2021
Updated
Aug 3, 2024
Vendor
Schneider Electric
Product
C-Bus Toolkit
Classifications
CWE-22, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=C-Bus Toolkit V1.15.7 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Schneider Electric · C-Bus Toolkitversion=C-Bus Toolkit V1.15.7 and prior

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8Zero Day InitiativeCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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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