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CVE-2021-21799

Description

Cross-site scripting vulnerabilities exist in the telnet_form.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). If a user visits a specially crafted URL, it can lead to arbitrary JavaScript code execution in the context of the targeted user’s browser. An attacker can provide a crafted URL to trigger this vulnerability.

NVD
Severity: MEDIUM
CVE ID: CVE-2021-21799
CVSS Score: 6.1
CVSS Metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Talos
Severity: CRITICAL
CVE ID: CVE-2021-21799
CVSS Score: 9.6
CVSS Metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Refrence: NVD MITRE

Proof Of Concept

Nuclei Templates for CVE-2021-21799

Refrence: Project Discovery GitHub

Description
Proof Of Concept