CVE-2021-33025

Local code execution via unvalidated registry keys

Published May 16, 2022 · Updated Apr 16, 2025

Improper input validation in xArrow SCADA 7.2 and earlier allows local users to execute registry keys with application-level privileges. The application accepts registry-key data without validating it before running the referenced entry, enabling attacker-controlled code execution in the xArrow process context. Exploitation requires local access and interaction with the affected application; CISA reports no internet-facing prerequisite and the resulting impact is bounded to the privileges of the application account.

CVSS severity7.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in xArrow SCADA 7.2 and earlier allows local users to execute registry keys with application-level privileges. The application accepts registry-key data without validating it before running the referenced entry, enabling attacker-controlled code execution in the xArrow process context. Exploitation requires local access and interaction with the affected application; CISA reports no internet-facing prerequisite and the resulting impact is bounded to the privileges of the application account.

The record

CVE
CVE-2021-33025
Published
May 16, 2022
Updated
Apr 16, 2025
Vendor
xArrow
Product
xArrow SCADA
Classifications
CWE-20, CWE-79, T1547.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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 <=7.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

xArrow · xArrow SCADAversion=unspecified <=7.2

Published CVSS scores

4.6NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.6ICS-CERTCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A: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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-79Improper Neutralization of Input During Web Page Generation
T1547.001Registry Run Keys / Startup Folder

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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