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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Grandstream | GXP1610 | ≤ 1.0.7.80 | — |
| Grandstream | GXP1615 | ≤ 1.0.7.80 | — |
| Grandstream | GXP1620 | ≤ 1.0.7.80 | — |
| Grandstream | GXP1625 | ≤ 1.0.7.80 | — |
| Grandstream | GXP1628 | ≤ 1.0.7.80 | — |
| Grandstream | GXP1630 | ≤ 1.0.7.80 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
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GrandStream GXP1600 Unauthenticated Remote Code Execution
exploit/linux/http/grandstream_gxp1600_unauth_rce
GitHub 1 repository
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VivianUba/grandstream-cve-2026-2329-analysis ★ 0 · Aug 19, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- https://www.rapid7.com/blog/post/ve-cve-2026-2329-critical-unauthenticated-stack-buffer-overflow-in-grandstream-gxp1600-voip-phones-fixed third-party-advisory
- https://psirt.grandstream.com/ vendor-advisory
- https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf release-notes
- https://github.com/rapid7/metasploit-framework/pull/20983 exploit