CVE-2026-2329

9.8 CRITICAL
Published: February 18, 2026 Modified: February 20, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf
Source: cve@rapid7.com
Product Release Notes
https://github.com/rapid7/metasploit-framework/pull/20983
Source: cve@rapid7.com
VDB Entry Patch
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 Advisory VDB Entry

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
41.1%
97th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-121

Affected Vendors

grandstream

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