CVE-2021-33021 - CVE House
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Status published Medium CVE-2021-33021

xArrow SCADA Cross-site Scripting

Vulnerability Description

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

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Sharon Brizinov from Claroty, and Michael Heinzl reported these vulnerabilities to CISA.

References

More from xArrow

View All →
CVE-2021-33025
xArrow SCADA Path Traversal
Medium 5.6
CVE-2021-33001
xArrow SCADA Cross-site Scripting
Medium 6.1

Affected Vendor

Affected Software

xArrow SCADA
Vulnerable Versions:
unspecified

Timeline

Official Publish: May 16th, 2022
Last Modified: April 16th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)

CWE-79

MITRE ATT&CK TTPs

T1189 Drive-by Compromise
Initial Access
T1059.007 JavaScript
Execution
T1539 Steal Web Session Cookie
Collection
T1213 Data from Information Repositories
Collection
T1567 Exfiltration Over Web Service
Exfiltration
T1491.001 Defacement
Impact