CVE-2025-65288

MEDIUM

Mercury MR816v2 4.8.7 - Buffer Overflow via Long Hostname

Title source: llm

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 (1)

Core 1

Core References

Exploit, Third Party Advisory

https://damiri.fr/en/cve/CVE-2025-65288

Scores

CVSS v3 6.5

EPSS 0.0035

EPSS Percentile 26.7%

Attack Vector ADJACENT_NETWORK

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-120

Status published

Products (1)

mercurycom/mr816_firmware 081c3114_4.8.7 build_110427

Published Dec 09, 2025

Tracked Since Feb 18, 2026