{"id":"CVE-2026-117957","kind":"vulnerability","aliases":["CVE-2026-117957"],"related":[],"title":"Firefox: WebRTC networking cryptographic flaw fixed in Firefox 159","description":"Cryptographic issue in the WebRTC: Networking component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.","summary":"A cryptographic weakness in the WebRTC networking component of Firefox was fixed in Firefox 159 and Firefox ESR 153.6. The sources do not say what an attacker can read or do with it.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","firefox","runtime","webrtc"],"not_affected_if":[],"how_to_check":"- Check the installed Firefox version in the browser's About page or with `firefox --version`\n- Compare against `159` and `153.6` (ESR)","fix":"- Update Firefox to `159` or later\n- Update Firefox ESR to `153.6` or later","status":"open","published_at":"2026-10-27T14:16:51+00:00","first_seen_at":"2026-10-27T14:32:23+00:00","triaged_at":"2026-10-27T14:35:30+00:00","updated_at":"2026-10-27T14:35:30+00:00","category":"runtime","confidence":0.4,"triage":{"at":"2026-10-27T14:35:30Z","model":"claude-haiku-5-5","output":{"fix":"- Update Firefox to `159` or later\n- Update Firefox ESR to `153.6` or later","reach":"unknown","title":"Firefox: WebRTC networking cryptographic flaw fixed in Firefox 159","impact":"medium","summary":"A cryptographic weakness in the WebRTC networking component of Firefox was fixed in Firefox 159 and Firefox ESR 153.6. The sources do not say what an attacker can read or do with it.","category":"runtime","nicknames":[],"who_cares":["firefox","browser","webrtc"],"confidence":0.4,"needs_auth":"unknown","worst_case":"unknown","analyst_note":"Find the Mozilla advisory for this CVE to learn the affected versions, the actual cryptographic flaw and its impact.","how_to_check":"- Check the installed Firefox version in the browser's About page or with `firefox --version`\n- Compare against `159` and `153.6` (ESR)","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000526,"input_tokens":3244,"output_tokens":403,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-117957':12A,15A '-2026':11A,14A '153.6':38B,66C '159':9A,34B,62C 'attack':46B 'browser':16B 'compon':27B,55C 'cryptograph':4A,21B,49C 'cve':10A,13A 'esr':37B,65C 'firefox':1A,8A,17B,29B,33B,36B,61C,64C 'fix':6A,31B,59C 'flaw':5A 'issu':50C 'network':3A,26B,54C 'read':48B 'runtim':18B 'say':43B 'sourc':40B 'vulner':57C 'weak':22B 'webrtc':2A,19B,25B,53C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T14:16:51+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-117957","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-117957","severity":null,"published_at":"2026-10-27T14:16:51+00:00","modified_at":"2026-10-27T14:16:51+00:00","first_seen_at":"2026-10-27T14:32:23+00:00","fetched_at":"2026-10-27T14:32:23+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"}