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.
History

Fri, 20 Feb 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Grandstream gxp1610 Firmware
Grandstream gxp1615 Firmware
Grandstream gxp1620 Firmware
Grandstream gxp1625 Firmware
Grandstream gxp1628 Firmware
Grandstream gxp1630 Firmware
CPEs cpe:2.3:h:grandstream:gxp1610:-:*:*:*:*:*:*:*
cpe:2.3:h:grandstream:gxp1615:-:*:*:*:*:*:*:*
cpe:2.3:h:grandstream:gxp1620:-:*:*:*:*:*:*:*
cpe:2.3:h:grandstream:gxp1625:-:*:*:*:*:*:*:*
cpe:2.3:h:grandstream:gxp1628:-:*:*:*:*:*:*:*
cpe:2.3:h:grandstream:gxp1630:-:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1610_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1615_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1620_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1625_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1628_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:grandstream:gxp1630_firmware:*:*:*:*:*:*:*:*
Vendors & Products Grandstream gxp1610 Firmware
Grandstream gxp1615 Firmware
Grandstream gxp1620 Firmware
Grandstream gxp1625 Firmware
Grandstream gxp1628 Firmware
Grandstream gxp1630 Firmware
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Thu, 19 Feb 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Grandstream
Grandstream gxp1610
Grandstream gxp1615
Grandstream gxp1620
Grandstream gxp1625
Grandstream gxp1628
Grandstream gxp1630
Vendors & Products Grandstream
Grandstream gxp1610
Grandstream gxp1615
Grandstream gxp1620
Grandstream gxp1625
Grandstream gxp1628
Grandstream gxp1630

Wed, 18 Feb 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 18 Feb 2026 14:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow
Weaknesses CWE-121
References
Metrics cvssV4_0

{'score': 9.3, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: rapid7

Published: 2026-02-18T14:08:09.272Z

Updated: 2026-02-18T14:50:51.252Z

Reserved: 2026-02-11T09:26:52.179Z

Link: CVE-2026-2329

cve-icon Vulnrichment

Updated: 2026-02-18T14:50:45.570Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-18T15:18:44.173

Modified: 2026-02-20T20:57:50.360

Link: CVE-2026-2329

cve-icon Redhat

No data.