{"id":"CVE-2026-89410","kind":"vulnerability","aliases":["CVE-2026-89410"],"related":[],"title":"Z-Wave SDK: malformed NCP SPI command leaks memory contents","description":"In Z-Wave SDK 8.1.1 and earlier, a malformed NCP SPI command can trigger out-of-bounds reads that leak sensitive information.","summary":"In Z-Wave SDK 8.1.1 and earlier, a malformed NCP SPI command triggers out-of-bounds reads. An attacker can leak sensitive information from device memory.","severity":"medium","cvss":5.1,"epss":0.00183,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["embedded","infrastructure","iot-firmware","z-wave"],"not_affected_if":["sdk-newer-than-8.1.1"],"how_to_check":"- unknown","fix":"- unknown","status":"open","published_at":"2026-10-22T14:17:51+00:00","first_seen_at":"2026-10-23T21:57:31+00:00","triaged_at":"2026-10-25T04:28:58+00:00","updated_at":"2026-10-25T04:28:58+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-10-25T04:28:58Z","model":"claude-haiku-5-5","output":{"fix":"- unknown","reach":"local","title":"Z-Wave SDK: malformed NCP SPI command leaks memory contents","impact":"low","summary":"In Z-Wave SDK 8.1.1 and earlier, a malformed NCP SPI command triggers out-of-bounds reads. An attacker can leak sensitive information from device memory.","category":"infrastructure","nicknames":[],"who_cares":["z-wave","iot-firmware","embedded"],"confidence":0.5,"needs_auth":"unknown","worst_case":"sensitive memory contents leaked via out-of-bounds reads","analyst_note":"Confirm the fixed SDK version and which products embed the NCP SPI interface, using the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-89410.","how_to_check":"- unknown","needs_analyst":true,"not_affected_if":["sdk-newer-than-8.1.1"],"who_is_affected":"Devices or firmware built on Z-Wave SDK 8.1.1 or earlier that accept NCP SPI commands. The sources do not list specific products or whether network-facing paths are involved, so unknown beyond the SDK version.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000559,"input_tokens":3329,"output_tokens":452,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-89410':14A,17A '8.1.1':31B,59C 'attack':46B 'bound':43B,72C 'command':8A,38B,66C 'content':11A 'cve':12A,15A 'devic':52B 'earlier':33B,61C 'embed':18B 'firmwar':22B 'inform':50B,77C 'infrastructur':19B 'iot':21B 'iot-firmwar':20B 'leak':9A,48B,75C 'malform':5A,35B,63C 'memori':10A,53B 'ncp':6A,36B,64C 'out-of-bound':40B,69C 'read':44B,73C 'sdk':4A,30B,58C 'sensit':49B,76C 'spi':7A,37B,65C 'trigger':39B,68C 'wave':3A,25B,29B,57C 'z':2A,24B,28B,56C 'z-wave':1A,23B,27B,55C","nicknames":[],"mitigations":[],"who_affected":"Devices or firmware built on Z-Wave SDK 8.1.1 or earlier that accept NCP SPI commands. The sources do not list specific products or whether network-facing paths are involved, so unknown beyond the SDK version.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-22T14:17:51+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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","cvss_by":"product-security@silabs.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-89410","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89410","severity":null,"published_at":"2026-10-22T14:17:51+00:00","modified_at":"2026-10-23T12:18:16+00:00","first_seen_at":"2026-10-23T21:57:31+00:00","fetched_at":"2026-10-23T22:29:02+00:00","note":null},{"source":"epss","external_id":"CVE-2026-89410","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-89410","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T07:15:51+00:00","fetched_at":"2026-10-24T07:15:51+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}