{"schema":"threatline.record/2","record":{"id":"CVE-2026-102551","aliases":["GHSA-pjq5-fqrr-g6pv"],"summary":"Improper verification of the source of a communication channel in FreeRTOS-Plus-TCP Router Advertisement handling","details":"Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow a remote third-party to influence an endpoint's IPv6 default gateway, on-link prefix, and address configuration via a crafted Router Advertisement.\n\n\n\nTo remediate this issue, users should upgrade to version V4.4.2.","categories":["Unclassified"],"product":"FreeRTOS-Plus-TCP","vendor":"FreeRTOS","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102551","source_modified_at":"2026-10-19T12:51:13.488Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"FreeRTOS-Plus-TCP","vendor":"FreeRTOS","versions":[{"lessThanOrEqual":"4.4.1","status":"affected","version":"0","versionType":"custom"}],"defaultStatus":"unaffected"},{"source":"GitHub Advisory Database","source_url":"https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-pjq5-fqrr-g6pv","source_modified_at":"2026-10-16T17:30:07Z","fetched_at":"2026-10-23T18:58:35.272684Z","package":{"ecosystem":"","name":"FreeRTOS-Plus-TCP"},"range":"<=V4.4.1"}],"fixed_versions":[],"cvss":7.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00273,"percentile":0.18698,"score_date":"2026-10-23"},"published_at":"2026-10-16T17:27:38.483Z","modified_at":"2026-10-19T12:51:13.488Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102551","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T12:51:13.488Z"},{"source":"GitHub Advisory Database","url":"https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-pjq5-fqrr-g6pv","fetched_at":"2026-10-23T18:58:35.272684Z","source_modified_at":"2026-10-16T17:30:07Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102551","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","GitHub Advisory Database","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.4.2","tags":["release-notes","patch"]},{"source":"CVE List","url":"https://aws.amazon.com/security/security-bulletins/2026-139-aws/","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-pjq5-fqrr-g6pv","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-19T12:50:34.406887Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-19T12:51:13.488Z","content_hash":"355ee91908587c106a9507beeeecb9a388289280b68ba70241731339fc79d129"}}