Buffer overflow in Grandstream Gxp1610
CVE-2026-2329
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.417 (98.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.406 · newest: 0.417 · change: +0.012
Affected products
- Grandstream Gxp1610 — versions 0
- Grandstream Gxp1610 Firmware
- Grandstream Gxp1615 — versions 0
- Grandstream Gxp1615 Firmware
- Grandstream Gxp1620 — versions 0
- Grandstream Gxp1620 Firmware
- Grandstream Gxp1625 — versions 0
- Grandstream Gxp1625 Firmware
- Grandstream Gxp1628 — versions 0
- Grandstream Gxp1628 Firmware
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.rapid7.com/blog/post/ve-cve-2026-2329-critical-unauthenticated-stack-buffer… (VDB Entry, Third Party Advisory, third-party-advisory)
- psirt.grandstream.com/ (vendor-advisory, Vendor Advisory)
- firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf (release-notes, Product, Release Notes)
- github.com/rapid7/metasploit-framework/pull/20983 (Patch, VDB Entry, exploit)
Frequently asked questions
- What is CVE-2026-2329?
- CVE-2026-2329 is a critical-severity vulnerability in Grandstream Gxp1610, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-02-18.
- How severe is CVE-2026-2329?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-2329 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.