CVE-2026-2329

Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow

Published Feb 18, 2026 CVSS 4.0 · 9.3 Critical EPSS 41.7% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
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'}

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
Type Values Removed Values Added
Metrics ssvc

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

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'}