MEDIUM

CVE-2021-21801

CVSS v3

6.1

MEDIUM

EPSS Score

63.4 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-21801 yet.

Full record on NVD

Description

This vulnerability is present in device_graph_page.php script, which is a part of the Advantech R-SeeNet web applications. A specially crafted URL by an attacker and visited by a victim can lead to arbitrary JavaScript code execution.

Technical details

Published: 2021-07-16

Frequently asked questions

What is CVE-2021-21801?

Is CVE-2021-21801 actively exploited?

Active exploitation of CVE-2021-21801 has not been confirmed. Its EPSS score was 63.4% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-21801?

CVE-2021-21801 has a CVSS v3 base score of 6.1 (MEDIUM severity).

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