CVE-2026-2329 CRITICAL

CVE-2026-2329: Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow

Vendor Grandstream
Product GXP1610
Weakness CWE-121
Published February 18, 2026
Last update February 18, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

An unauthenticated stack-based buffer overflow vulnerability exists in the HTTP API endpoint /cgi-bin/api.values.get. A remote attacker can leverage this vulnerability to achieve unauthenticated remote code execution (RCE) with root privileges on a target device. The vulnerability affects all six device models in the series: GXP1610, GXP1615, GXP1620, GXP1625, GXP1628, and GXP1630.

Key dates

02Disclosure timeline

February 18, 2026 CVE published
February 18, 2026 Record updated