critical9.8
CVE-2026-2329
An unauthenticated stack-based buffer overflow vulnerability exists in the HTTP API endpoint /cgi-bin/api.values.get.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Grandstream | Gxp1610 Firmware | before 1.0.7.81 |
| Grandstream | Gxp1615 Firmware | before 1.0.7.81 |
| Grandstream | Gxp1620 Firmware | before 1.0.7.81 |
| Grandstream | Gxp1625 Firmware | before 1.0.7.81 |
| Grandstream | Gxp1628 Firmware | before 1.0.7.81 |
| Grandstream | Gxp1630 Firmware | before 1.0.7.81 |
Weakness classification
References
- NVD record
- CVE.org record
- https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf
- https://github.com/rapid7/metasploit-framework/pull/20983
- https://psirt.grandstream.com/
- https://www.rapid7.com/blog/post/ve-cve-2026-2329-critical-unauthenticated-stack-buffer-overflow-in-grandstream-gxp1600-voip-phones-fixed