---
title: "CVE-2021-21801: Advantech vulnerability | CubePath"
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…"
language: en
source: https://cubepath.com/security/cve/CVE-2021-21801
---

# CVE-2021-21801: Advantech vulnerability | CubePath

## 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.

Official description from the CVE record, published by talos. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-21801)

## Key data

### CVSS 3.0 Critical 9.6

Score published by talos in the CVE record.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

| Metric                 | Value    | What it means                                                                       |
| ---------------------- | -------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network  | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low      | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None     | No account or privileges are needed.                                                |
| User interaction       | Required | A user has to do something first, such as opening a file or following a link.       |
| Scope                  | Changed  | The impact can reach other components beyond the vulnerable one.                    |
| Confidentiality impact | High     | Serious or total effect on the secrecy of data.                                     |
| Integrity impact       | High     | Serious or total effect on the trustworthiness of data.                             |
| Availability impact    | High     | Serious or total effect on availability.                                            |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.58968 (59.0% probability)

Percentile

99.1%

Scores of

Nov 10, 2026

Model

v2026.06.15

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-79](https://cwe.mitre.org/data/definitions/79.html) Improper Neutralization of Input During Web Page Generation

## Affected products

Products listed in the CVE record, as the CNA published them.

- Advantech

  - affected: Advantech R-SeeNet 2.4.12 (20.10.2020)

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [talosintelligence.com/vulnerability\_reports/TALOS-2021-1272](https://talosintelligence.com/vulnerability%5Freports/TALOS-2021-1272)

## Timeline

1. ID reserved Jan 4, 2021
2. Record published Jul 16, 2021
3. Record last updated Aug 3, 2024

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:04 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)