{"id":"CVE-2026-117609","kind":"vulnerability","aliases":["CVE-2026-117609"],"related":[],"title":"rtl_433: stack overflow in Proflame decoder lets nearby radio attacker corrupt memory","description":"rtl_433 through 25.12 contains a stack-based buffer overflow vulnerability in proflame2_mc() that allows nearby attackers to write past a 7-byte stack buffer by sending more than seven valid Manchester-coded words. Attackers can transmit a crafted OOK radio signal or supply a crafted signal file to crash rtl_433 and corrupt stack memory, enabling control-flow hijacking on builds without stack canaries.","summary":"rtl_433, a tool that decodes radio signals from home sensors, has a stack buffer overflow in its proflame2_mc() decoder. A nearby attacker sending a crafted OOK radio signal, or a crafted signal file, can crash it and may hijack control flow on builds without stack canaries.","severity":"high","cvss":7.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["iot","other","radio-decoding","rtl_433","sdr","self-hosted"],"not_affected_if":["no-untrusted-signal-files","not-installed"],"how_to_check":"- Run `rtl_433 -V` to see the installed version and compare it with `25.12`\n- Check whether the package manager lists rtl_433 and which version it installed\n- unknown","fix":"- Move to a rtl_433 release newer than `25.12`\n- unknown","status":"open","published_at":"2026-10-28T03:17:12+00:00","first_seen_at":"2026-10-28T03:31:02+00:00","triaged_at":"2026-10-28T03:32:35+00:00","updated_at":"2026-10-28T03:32:35+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-10-28T03:32:35Z","model":"claude-haiku-5-5","output":{"fix":"- Move to a rtl_433 release newer than `25.12`\n- unknown","reach":"network","title":"rtl_433: stack overflow in Proflame decoder lets nearby radio attacker corrupt memory","impact":"high","summary":"rtl_433, a tool that decodes radio signals from home sensors, has a stack buffer overflow in its proflame2_mc() decoder. A nearby attacker sending a crafted OOK radio signal, or a crafted signal file, can crash it and may hijack control flow on builds without stack canaries.","category":"other","nicknames":[],"who_cares":["rtl_433","radio-decoding","self-hosted","iot","sdr"],"confidence":0.6,"needs_auth":"no","worst_case":"Crash, possible control-flow hijack on builds without stack canaries","analyst_note":"Check the NVD entry and the rtl_433 project for the patched version and whether a fix has shipped; the sources give no fix version.","how_to_check":"- Run `rtl_433 -V` to see the installed version and compare it with `25.12`\n- Check whether the package manager lists rtl_433 and which version it installed\n- unknown","needs_analyst":true,"not_affected_if":["not-installed","no-untrusted-signal-files"],"who_is_affected":"Systems that run rtl_433 through version 25.12 to decode radio signals, including ones that process signal files from untrusted sources. The sources do not describe a default-on service, so machines that do not run rtl_433 are not exposed. Builds with stack canaries and hardening make hijacking harder but do not remove the crash risk.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000633,"input_tokens":3374,"output_tokens":591,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-117609':16A,19A '-2026':15A,18A '25.12':82C '433':2A,26B,32B,80C,133C '7':102C 'allow':95C 'attack':11A,54B,97C,116C 'base':87C 'buffer':45B,88C,105C 'build':75B,144C 'byte':103C 'canari':78B,147C 'code':114C 'contain':83C 'control':72B,140C 'control-flow':139C 'corrupt':12A,135C 'craft':57B,63B,120C,127C 'crash':67B,131C 'cve':14A,17A 'decod':7A,24B,36B,51B 'enabl':138C 'file':65B,129C 'flow':73B,141C 'hijack':71B,142C 'home':40B 'host':30B 'iot':20B 'let':8A 'manchest':113C 'manchester-cod':112C 'may':70B 'mc':50B,93C 'memori':13A,137C 'nearbi':9A,53B,96C 'ook':58B,121C 'overflow':4A,46B,89C 'past':100C 'proflam':6A 'proflame2':49B,92C 'radio':10A,23B,37B,59B,122C 'radio-decod':22B 'rtl':1A,25B,31B,79C,132C 'sdr':27B 'self':29B 'self-host':28B 'send':55B,107C 'sensor':41B 'seven':110C 'signal':38B,60B,64B,123C,128C 'stack':3A,44B,77B,86C,104C,136C,146C 'stack-bas':85C 'suppli':125C 'tool':34B 'transmit':118C 'valid':111C 'vulner':90C 'without':76B,145C 'word':115C 'write':99C","nicknames":[],"mitigations":[],"who_affected":"Systems that run rtl_433 through version 25.12 to decode radio signals, including ones that process signal files from untrusted sources. The sources do not describe a default-on service, so machines that do not run rtl_433 are not exposed. Builds with stack canaries and hardening make hijacking harder but do not remove the crash risk.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-28T03:17:12+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-117609","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-117609","severity":null,"published_at":"2026-10-28T03:17:12+00:00","modified_at":"2026-10-28T03:17:12+00:00","first_seen_at":"2026-10-28T03:31:02+00:00","fetched_at":"2026-10-28T03:31:02+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"}