CVE-2025-65289

A stored Cross site scripting (XSS) vulnerability in the Mercury MR816v2 (081C3114 4.8.7 Build 110427 Rel 36550n) router allows a remote attacker on the LAN to inject JavaScript into the router's management UI by submitting a malicious hostname. The injected script is stored and later executed in the context of an administrator's browser (for example after DHCP release/renew triggers the interface to display the stored hostname). Because the management interface uses weak/basic authentication and does not properly protect or isolate session material, the XSS can be used to exfiltrate the admin session and perform administrative actions.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://damiri.fr/en/cve/CVE-2025-65289	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:mercurycom:mr816_firmware:081c3114_4.8.7:build_110427:*:*:*:*:*:*

cpe:2.3:h:mercurycom:mr816:2.0:*:*:*:*:*:*:*

History

12 Dec 2025, 14:31

Type	Values Removed	Values Added
First Time		Mercurycom mr816 Mercurycom mr816 Firmware Mercurycom
References	~~() https://damiri.fr/en/cve/CVE-2025-65289 -~~	() https://damiri.fr/en/cve/CVE-2025-65289 - Exploit, Third Party Advisory
CPE		cpe:2.3:o:mercurycom:mr816_firmware:081c3114_4.8.7:build_110427:::::: cpe:2.3:h:mercurycom:mr816:2.0:::::::*

10 Dec 2025, 21:16

Type	Values Removed	Values Added
CWE		CWE-79
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.1

09 Dec 2025, 17:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-09 17:15

Updated : 2025-12-12 14:31

NVD link : CVE-2025-65289

Mitre link : CVE-2025-65289

CVE.ORG link : CVE-2025-65289

JSON object : View

Products Affected

mercurycom

mr816_firmware
mr816

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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