CVE-2025-65288

Published Dec 9, 2025 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
A buffer overflow in the Mercury MR816v2 (081C3114 4.8.7 Build 110427 Rel 36550n) occurs when the device accepts and stores excessively long hostnames from LAN hosts without proper length validation. The affected code performs unchecked copies/concatenations into fixed-size buffers. A crafted long hostname can overflow the buffer, cause a crash (DoS) and potentially enabling remote code execution.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
First Time appeared Mercurycom
Mercurycom mr816
Mercurycom mr816 Firmware
CPEs cpe:2.3:h:mercurycom:mr816:2.0:*:*:*:*:*:*:*
cpe:2.3:o:mercurycom:mr816_firmware:081c3114_4.8.7:build_110427:*:*:*:*:*:*
Vendors & Products Mercurycom
Mercurycom mr816
Mercurycom mr816 Firmware
Type Values Removed Values Added
First Time appeared Mercury
Mercury mr816v2
Vendors & Products Mercury
Mercury mr816v2
Type Values Removed Values Added
Weaknesses CWE-120
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

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

Type Values Removed Values Added
Description A buffer overflow in the Mercury MR816v2 (081C3114 4.8.7 Build 110427 Rel 36550n) occurs when the device accepts and stores excessively long hostnames from LAN hosts without proper length validation. The affected code performs unchecked copies/concatenations into fixed-size buffers. A crafted long hostname can overflow the buffer, cause a crash (DoS) and potentially enabling remote code execution.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Dec 10, 2025, 8:55 PM
Reserved
Nov 18, 2025, 12:00 AM
Status
Analyzed
Published
Dec 9, 2025, 5:15 PM
Modified
Oct 18, 2026, 3:10 PM