TI-2025-40314 Aliases CVE-2025-65288 GHSA-gxr6-pcf7-p63v

A buffer overflow in the Mercury MR816v2 (081C3114 4.8.7 Build 110427 Rel 36550n) occurs…

MEDIUM 62CWE-120Published 2025-12-09 · Updated 2025-12-10

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00397 34th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:mercurycom:mr816_firmware:081c3114_4.8.7:build_110427::::::	081c3114_4.8.7 build_110427	Vulnerable	Mercurycom
cpe:2.3:h:mercurycom:mr816:2.0:::::::*	2.0	Running on	Mercurycom

cpe:2.3:o:mercurycom:mr816_firmware:081c3114_4.8.7:build_110427:*:*:*:*:*:* Versions 081c3114_4.8.7 build_110427 Vulnerable ·Mercurycom
cpe:2.3:h:mercurycom:mr816:2.0:*:*:*:*:*:*:* Versions 2.0 Running on ·Mercurycom

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-65288
2026-10-03 Alias added: GHSA-gxr6-pcf7-p63v

References

Exploit 1

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

TI-2025-40315 A stored Cross site scripting (XSS) vulnerability in the Mercury MR816v2 (081C3114 4.8.7… CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences