{"id":"CVE-2026-2329","aliases":["EUVD-2026-8089","GHSA-r4m3-cm43-fxrj"],"status":"published","title":"Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow","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.","severity":{"version":"4.0","score":9.3,"vector":"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.41721,"percentile":0.98696,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-121"],"published":"2026-02-18T14:08:09Z","modified":"2026-06-17T10:30:47Z","exploits":[{"source":"metasploit","id":"exploit/linux/http/grandstream_gxp1600_unauth_rce","title":"GrandStream GXP1600 Unauthenticated Remote Code Execution","type":"exploit","platform":"Linux,Unix","date":"2026-02-18","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/linux/http/grandstream_gxp1600_unauth_rce"},{"source":"pocgithub","id":"VivianUba/grandstream-cve-2026-2329-analysis","title":"VivianUba/grandstream-cve-2026-2329-analysis","date":"2026-08-19","url":"https://github.com/VivianUba/grandstream-cve-2026-2329-analysis"}],"products":[{"vendor":"grandstream","product":"gxp1610"},{"vendor":"grandstream","product":"gxp1610_firmware"},{"vendor":"grandstream","product":"gxp1615"},{"vendor":"grandstream","product":"gxp1615_firmware"},{"vendor":"grandstream","product":"gxp1620"},{"vendor":"grandstream","product":"gxp1620_firmware"},{"vendor":"grandstream","product":"gxp1625"},{"vendor":"grandstream","product":"gxp1625_firmware"},{"vendor":"grandstream","product":"gxp1628"},{"vendor":"grandstream","product":"gxp1628_firmware"},{"vendor":"grandstream","product":"gxp1630"},{"vendor":"grandstream","product":"gxp1630_firmware"}],"references":[{"url":"https://www.rapid7.com/blog/post/ve-cve-2026-2329-critical-unauthenticated-stack-buffer-overflow-in-grandstream-gxp1600-voip-phones-fixed","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://psirt.grandstream.com/","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf","tags":["release-notes","Product","Release Notes"]},{"url":"https://github.com/rapid7/metasploit-framework/pull/20983","tags":["exploit","Patch","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2329"},{"url":"https://psirt.grandstream.com"},{"url":"https://github.com/advisories/GHSA-r4m3-cm43-fxrj"}],"sources":{"cve":[{"id":"CVE-2026-2329","title":"Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow","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.","status":"published","published":"2026-02-18T14:08:09.272Z","modified":"2026-02-18T14:50:51.252Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T13:48:46.911326Z"}],"euvd":[{"id":"EUVD-2026-8089","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.","status":"published","published":"2026-02-18T14:08:09Z","modified":"2026-02-18T14:50:51Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical"}],"updated_at":"2026-11-02T19:48:37.43406Z"}],"ghsa":[{"id":"GHSA-r4m3-cm43-fxrj","title":"An unauthenticated stack-based buffer overflow vulnerability exists in the HTTP API endpoint /cgi...","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.","status":"published","published":"2026-02-18T15:31:27Z","modified":"2026-02-20T21:31:21Z","cvss":[{"version":"4.0","score":9.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:06:18.00539Z"}],"nvd":[{"id":"CVE-2026-2329","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.","status":"published","published":"2026-02-18T15:18:44.173Z","modified":"2026-06-17T10:30:47.8Z","cvss":[{"version":"4.0","score":9.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:06.274729Z"}]}}