CVE-2021-22797

Code execution via unvalidated project-file paths

Published Mar 28, 2022 · Updated Aug 3, 2024

Path traversal in Schneider Electric Control Expert, Process Expert, and RemoteConnect allows attackers to execute code from a malicious project file. The STU and STA project-file parser uses an unvalidated user-supplied path in file operations, permitting a script to be written outside the intended directory. Execution occurs in the current user's context only after an engineering-workstation user opens the crafted file.

CVSS severity7.8
High
EPSS probability26.10%
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 Control Expert, Process Expert, and RemoteConnect allows attackers to execute code from a malicious project file. The STU and STA project-file parser uses an unvalidated user-supplied path in file operations, permitting a script to be written outside the intended directory. Execution occurs in the current user's context only after an engineering-workstation user opens the crafted file.

The record

CVE
CVE-2021-22797
Published
Mar 28, 2022
Updated
Aug 3, 2024
Vendor
Schneider Electric
Product
EcoStruxure Control Expert
Classifications
CWE-22, CAPEC-126, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 28, 2022CVE 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=unspecified <V15.0 SP1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Schneider Electric · EcoStruxure Control Expertversion=unspecified <V15.0 SP1
Schneider Electric · EcoStruxure Process Expertversion=unspecified <2020
Schneider Electric · SCADAPack RemoteConnect for x70version=All versions

Published CVSS scores

9.3NIST NVDAV:N/AC:M/Au:N/C:C/I:C/A:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8Schneider ElectricCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1204.002User Execution: Malicious File

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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