Cross-Site Scripting Vulnerability in MERCUSYS Devices
CVE-2021-25810

6.1MEDIUM

Key Information:

Vendor

Mercusys

Status
Mercury X18g Firmware
Vendor
CVE Published:
29 April 2021

What is CVE-2021-25810?

A Cross Site Scripting (XSS) vulnerability has been identified in MERCUSYS Mercury X18G devices version 1.0.5. This security flaw arises from improper handling of input parameters, specifically 'src_dport_start', 'src_dport_end', and 'dest_port'. When crafted values are submitted to these parameters, an attacker can execute malicious scripts within the context of the user’s session, potentially leading to unauthorized actions and data exposure. Users are advised to apply relevant firmware updates to mitigate this risk.

References

https://www.mercusys.com/en/
x_refsource_MISC
https://www.mercurycom.com.cn/product-521-1.html
x_refsource_MISC
https://github.com/pokerfacett/MY_REQUEST/blob/master/Mer...
x_refsource_MISC

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.