Critical 9.3Published Feb 18, 2026

CVE-2026-2329Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow

Updated under an hour ago (Oct 26, 2026, 6:10 PM ET)

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It affects Grandstream GXP1610 and 11 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Grandstream GXP1610

Exploited in the last 30 days

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.

CVSS: 9.3 CRITICAL (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: rapid7
NVD analysis: Analyzed
Record last updated: Feb 18, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Grandstream GXP1610 grandstream:gxp1610 (from the name)	through 1.0.7.80	CNA record
Grandstream GXP1615 grandstream:gxp1615 (from the name)	through 1.0.7.80	CNA record
Grandstream GXP1620 grandstream:gxp1620 (from the name)	through 1.0.7.80	CNA record
Grandstream GXP1625 grandstream:gxp1625 (from the name)	through 1.0.7.80	CNA record
Grandstream GXP1628 grandstream:gxp1628 (from the name)	through 1.0.7.80	CNA record
Grandstream GXP1630 grandstream:gxp1630 (from the name)	through 1.0.7.80	CNA record
grandstream gxp1610_firmware grandstream:gxp1610_firmware	before 1.0.7.81	NVD
grandstream gxp1615_firmware grandstream:gxp1615_firmware	before 1.0.7.81	NVD
grandstream gxp1620_firmware grandstream:gxp1620_firmware	before 1.0.7.81	NVD
grandstream gxp1625_firmware grandstream:gxp1625_firmware	before 1.0.7.81	NVD
1–10 of 12

References

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, vdb-entry
https://psirt.grandstream.com/	vendor-advisory
https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf	release-notes, product
https://github.com/rapid7/metasploit-framework/pull/20983	exploit, patch, vdb-entry

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.