CVE-2026-2329

Published: Feb 18, 2026Modified: Jun 17, 2026

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: cve@rapid7.com (Secondary)

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.

Affected (6)

Products: Grandstream: Gxp1610 Firmware, Gxp1615 Firmware, Gxp1620 Firmware, Gxp1625 Firmware, Gxp1628 Firmware, Gxp1630 Firmware

6 products

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Grandstream Gxp1610 Firmware	Before 1.0.7.81

Running on/with	Platform Versions
Grandstream Gxp1610	All versions

Configuration B

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Grandstream Gxp1615 Firmware	Before 1.0.7.81

Running on/with	Platform Versions
Grandstream Gxp1615	All versions

Configuration C

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Grandstream Gxp1620 Firmware	Before 1.0.7.81

Running on/with	Platform Versions
Grandstream Gxp1620	All versions

Configuration D

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Grandstream Gxp1625 Firmware	Before 1.0.7.81

Running on/with	Platform Versions
Grandstream Gxp1625	All versions

Configuration E

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Grandstream Gxp1628 Firmware	Before 1.0.7.81

Running on/with	Platform Versions
Grandstream Gxp1628	All versions

Configuration F

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Grandstream Gxp1630 Firmware	Before 1.0.7.81

Running on/with	Platform Versions
Grandstream Gxp1630	All versions

Related CWEs

CWE-121

Stack-based Buffer Overflow

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

References (4)

https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf

Source: cve@rapid7.com

ProductRelease Notes

https://github.com/rapid7/metasploit-framework/pull/20983

Source: cve@rapid7.com

PatchVDB Entry

https://psirt.grandstream.com/

Source: cve@rapid7.com

Vendor Advisory

https://www.rapid7.com/blog/post/ve-cve-2026-2329-critical-unauthenticated-stack-buffer-overflow-in-grandstream-gxp1600-voip-phones-fixed

Source: cve@rapid7.com

Third Party AdvisoryVDB Entry

Timeline

No history available yet.