Is CVE-2021-33001 actively exploited?

No active exploitation of CVE-2021-33001 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-33001 be exploited remotely?

Yes. CVE-2021-33001 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-33001?

CVE-2021-33001 has a CVSS score of 6.1 (MEDIUM).

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MEDIUM

CVE-2021-33001

CWE-79Published: May 16, 2022· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

xArrow SCADA versions 7.2 and prior is vulnerable to cross-site scripting due to parameter ‘bdate’ of the resource xhisvalue.htm, which may allow an unauthorized attacker to execute arbitrary code.

NVD Source

Technical Analysis

CVE-2021-33001 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.