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

16 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de Cross site scripting (XSS) almacenado en el router Mercury MR816v2 (081C3114 4.8.7 Build 110427 Rel 36550n) permite a un atacante remoto en la LAN inyectar JavaScript en la interfaz de usuario de gestión del router al enviar un nombre de host malicioso. El script inyectado se almacena y se ejecuta posteriormente en el contexto del navegador de un administrador (por ejemplo, después de que la liberación/renovación de DHCP active la interfaz para mostrar el nombre de host almacenado). Debido a que la interfaz de gestión utiliza autenticación débil/básica y no protege o aísla adecuadamente el material de la sesión, el XSS puede utilizarse para exfiltrar la sesión del administrador y realizar acciones administrativas.

Information

Published : 2025-12-09 17:15

Updated : 2026-10-16 13:10

NVD link : CVE-2025-65289

Mitre link : CVE-2025-65289

CVE.ORG link : CVE-2025-65289

JSON object : View

Products Affected

mercurycom

mr816
mr816_firmware

CWE

CWE-79

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

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