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CVE-2021-21800

Quick assessment

Affected
n/a Advantech
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Advantech R-SeeNet是中国台湾研华（Advantech）公司的一个工业监控软件。该软件基于 snmp 协议进行监控平台，并且适用于 Linux、Windows 平台。 Advantech R-SeeNet v2.4.12(20.10.2020)的 ssh_form.php 脚本功能中存在跨站脚本漏洞。如果用户访问特制的 URL，可能会导致在目标用户浏览器的上下文中执行任意 JavaScript 代码。

AI Predicted 6.1 Difficulty: Easy EPSS 14.12% · P96

Public Exploits 1

Nuclei · 1 CVE-2021-21800.yaml [template]
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I. Basic Information for CVE-2021-21800

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Cross-site scripting vulnerabilities exist in the ssh_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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Advantech R-SeeNet 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Advantech R-SeeNet是中国台湾研华（Advantech）公司的一个工业监控软件。该软件基于 snmp 协议进行监控平台，并且适用于 Linux、Windows 平台。 Advantech R-SeeNet v2.4.12(20.10.2020)的 ssh_form.php 脚本功能中存在跨站脚本漏洞。如果用户访问特制的 URL，可能会导致在目标用户浏览器的上下文中执行任意 JavaScript 代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- Advantech Advantech R-SeeNet 2.4.12 (20.10.2020) -

II. Public POCs for CVE-2021-21800

# POC Description Source Link Shenlong Link
1 Advantech R-SeeNet 2.4.12 contains a reflected cross-site scripting vulnerability in the ssh_form.php script functionality. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21800.yaml POC Details
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III. Intelligence Information for CVE-2021-21800

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Other References for CVE-2021-21800 (1)

Same Patch Batch · n/a · 2021-07-16 · 15 CVEs total

CVE-2021-36769 Telegram 加密问题漏洞
CVE-2021-28053 Centreon SQL注入漏洞
CVE-2021-28054 Centreon 跨站脚本漏洞
CVE-2021-28114 Froala WYSIWYG Editor 跨站脚本漏洞
CVE-2021-21803 Advantech R-SeeNet 跨站脚本漏洞
CVE-2021-21802 Advantech R-SeeNet 跨站脚本漏洞
CVE-2021-21801 Advantech R-SeeNet 跨站脚本漏洞
CVE-2021-21804 Advantech R-SeeNet 安全漏洞
CVE-2021-21799 Advantech R-SeeNet 跨站脚本漏洞
CVE-2021-21816 D-LINK DIR-3040 信息泄露漏洞
CVE-2021-21817 D-LINK DIR-3040 信息泄露漏洞
CVE-2021-21818 D-Link D-LINK DIR-3040 信任管理问题漏洞
CVE-2021-21819 D-LINK DIR-3040 操作系统命令注入漏洞
CVE-2021-21820 D-LINK DIR-3040 信任管理问题漏洞

IV. Related Vulnerabilities

Same product: Advantech
Same vendor: n/a
Same weakness: CWE-79

V. Comments for CVE-2021-21800

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