VulnerabilityAnalyzed
CVE-2026-2329
An unauthenticated stack-based buffer overflow vulnerability exists in the HTTP API endpoint /cgi-bin/api.values.get.
CRITICAL 9.3EPSS 40.0%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 40.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 4.0
- 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 40.01% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-121
- Affected
- grandstream/gxp1610 firmware · grandstream/gxp1615 firmware · grandstream/gxp1620 firmware · grandstream/gxp1625 firmware · grandstream/gxp1628 firmware · grandstream/gxp1630 firmware
- Source
- cve@rapid7.com
References
- https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdfProduct, Release Notes
- https://github.com/rapid7/metasploit-framework/pull/20983Patch, VDB Entry
- https://psirt.grandstream.com/Vendor Advisory
- https://www.rapid7.com/blog/post/ve-cve-2026-2329-critical-unauthenticated-stack-buffer-overflow-in-grandstream-gxp1600-voip-phones-fixedThird Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.