CVE-2025-65288: A buffer overflow in the Mercury MR816v2 (081C3114 4.8.7 Build 110427 Rel 36550n) occurs when the device accepts and…
CVE-2025-65288 · Severity: medium · CVSS 6.5 · Published 2025-12-09
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-65288 being exploited in the wild.
How severe is CVE-2025-65288?
Medium severity, with a CVSS score of 6.5, published 9 December 2025.
Which products and versions are affected?
Mercurycom Mr816, Mercurycom Mr816 Firmware. The advisory does not name versions.
Is there a fix for CVE-2025-65288?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-65288?
Check whether you run Mercurycom Mr816 or Mercurycom Mr816 Firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.