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.
References
History

Wed, 10 Dec 2025 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Mercury
Mercury mr816v2
Vendors & Products Mercury
Mercury mr816v2

Wed, 10 Dec 2025 21:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 09 Dec 2025 16:45:00 +0000

Type Values Removed Values Added
Description 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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2025-12-09T00:00:00.000Z

Updated: 2025-12-10T21:04:27.804Z

Reserved: 2025-11-18T00:00:00.000Z

Link: CVE-2025-65289

cve-icon Vulnrichment

Updated: 2025-12-10T21:04:02.581Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-09T17:15:55.727

Modified: 2025-12-10T21:16:07.003

Link: CVE-2025-65289

cve-icon Redhat

No data.