CVE-2026-2329

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/18/2026

Last Modified2/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

grandstream:gxp1610grandstream:gxp1610_firmwaregrandstream:gxp1615grandstream:gxp1615_firmwaregrandstream:gxp1620grandstream:gxp1620_firmwaregrandstream:gxp1625grandstream:gxp1625_firmwaregrandstream:gxp1628grandstream:gxp1628_firmwaregrandstream:gxp1630grandstream:gxp1630_firmware

Weaknesses (CWE)

CWE-121

References

https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf(cve@rapid7.com)

https://github.com/rapid7/metasploit-framework/pull/20983(cve@rapid7.com)

https://psirt.grandstream.com/(cve@rapid7.com)

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

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.