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CVE-2021-32536— MCU Technologies MCUsystem - Reflected XSS

Quick assessment

Affected
MCU Technologies MCUsystem
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MCUsystem是台湾恩時悠科技有限公司的一款多点视讯会议控制系统。 MCU system存在跨站脚本漏洞，该漏洞源于登录页面不对特殊字符进行过滤，远程攻击者可利用该漏洞在没有特权的情况下注入JavaScript，从而执行反射XSS攻击。

CVSS 6.1 · Medium EPSS 0.79% · P53

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-32536

Vulnerability Information
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Vulnerability Title
MCU Technologies MCUsystem - Reflected XSS
Source: CVE Program / CVE List V5
Vulnerability Description
The login page in the MCUsystem does not filter with special characters, which allows remote attackers can inject JavaScript without privilege and thus perform reflected XSS attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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
MCU system 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MCUsystem是台湾恩時悠科技有限公司的一款多点视讯会议控制系统。 MCU system存在跨站脚本漏洞，该漏洞源于登录页面不对特殊字符进行过滤，远程攻击者可利用该漏洞在没有特权的情况下注入JavaScript，从而执行反射XSS攻击。
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
MCU Technologies MCUsystem 5.5 -

II. Public POCs for CVE-2021-32536

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III. Intelligence Information for CVE-2021-32536

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Other References for CVE-2021-32536 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2021-32536

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