{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2329","assignerOrgId":"9974b330-7714-4307-a722-5648477acda7","state":"PUBLISHED","assignerShortName":"rapid7","dateReserved":"2026-02-11T09:26:52.179Z","datePublished":"2026-02-18T14:08:09.272Z","dateUpdated":"2026-02-18T14:50:51.252Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"GXP1610","vendor":"Grandstream","versions":[{"lessThanOrEqual":"1.0.7.80","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"GXP1615","vendor":"Grandstream","versions":[{"lessThanOrEqual":"1.0.7.80","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"GXP1620","vendor":"Grandstream","versions":[{"lessThanOrEqual":"1.0.7.80","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"GXP1625","vendor":"Grandstream","versions":[{"lessThanOrEqual":"1.0.7.80","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"GXP1628","vendor":"Grandstream","versions":[{"lessThanOrEqual":"1.0.7.80","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"GXP1630","vendor":"Grandstream","versions":[{"lessThanOrEqual":"1.0.7.80","status":"affected","version":"0","versionType":"semver"}]}],"credits":[{"lang":"en","type":"finder","value":"Stephen Fewer, Senior Principal Security Researcher at Rapid7"}],"datePublic":"2026-02-18T14:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"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.<br>"}],"value":"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."}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.3,"baseSeverity":"CRITICAL","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","description":"CWE-121 Stack-based Buffer Overflow","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"9974b330-7714-4307-a722-5648477acda7","shortName":"rapid7","dateUpdated":"2026-02-18T14:08:09.272Z"},"references":[{"tags":["third-party-advisory"],"url":"https://www.rapid7.com/blog/post/ve-cve-2026-2329-critical-unauthenticated-stack-buffer-overflow-in-grandstream-gxp1600-voip-phones-fixed"},{"tags":["vendor-advisory"],"url":"https://psirt.grandstream.com/"},{"tags":["release-notes"],"url":"https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf"},{"tags":["exploit"],"url":"https://github.com/rapid7/metasploit-framework/pull/20983"}],"source":{"discovery":"UNKNOWN"},"title":"Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow","x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-18T14:50:26.406047Z","id":"CVE-2026-2329","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-18T14:50:51.252Z"}}]}}