{"id":"CVE-2026-102552","revision":"d3a4c51124e54fe1befe231864ffe94b","records":[{"revision":"d3a4c51124e54fe1befe231864ffe94b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-102552","aliases":[],"title":"Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP DNS resolver","description":"Improper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-party to insert a chosen address into the device's DNS cache via a forged DNS reply.\n\n\n\nTo remediate this issue, users should upgrade to version V4.4.2 and enable ipconfigDNS_CHECK_REPLY_SOURCE_IP.","state":0,"publishedAt":"2026-10-16T17:28:47.578+00:00","modifiedAt":"2026-10-19T12:54:33.789+00:00","affected":[{"ecosystem":"Vendor product","name":"FreeRTOS-Plus-TCP","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"FreeRTOS\",\n                    \"product\": \"FreeRTOS-Plus-TCP\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"4.4.1\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9,"severity":"MEDIUM"},{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.2","https://aws.amazon.com/security/security-bulletins/2026-139-aws/","https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-h4fw-pv82-p7h5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102552","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102552","identifiers":["CVE-2026-102552"]},"retained":false,"historicalAffected":[]}],"coverage":[]}