{"id":"CVE-2026-124868","kind":"vulnerability","aliases":["CVE-2026-124868"],"related":[],"title":"Firefox: incorrect boundary checks in DOM core may allow memory corruption","description":"Incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.","summary":"Firefox's DOM Core and HTML component mishandles boundary conditions, a memory-safety flaw class. The sources do not state what an attacker can gain from it.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browser","firefox","runtime"],"not_affected_if":["firefox-version-at-or-above-fix"],"how_to_check":"- Check the installed Firefox version via Help > About Firefox\n- Compare against `160` and `153.7` (ESR) as the fixed versions","fix":"- Firefox `160`\n- Firefox ESR `153.7`","status":"open","published_at":"2026-11-10T14:17:19+00:00","first_seen_at":"2026-11-10T14:22:14+00:00","triaged_at":"2026-11-10T14:26:27+00:00","updated_at":"2026-11-10T14:26:27+00:00","category":"runtime","confidence":0.5,"triage":{"at":"2026-11-10T14:26:27Z","model":"claude-haiku-5-5","output":{"fix":"- Firefox `160`\n- Firefox ESR `153.7`","reach":"internet","title":"Firefox: incorrect boundary checks in DOM core may allow memory corruption","impact":"medium","summary":"Firefox's DOM Core and HTML component mishandles boundary conditions, a memory-safety flaw class. The sources do not state what an attacker can gain from it.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["firefox","browser"],"confidence":0.5,"fix_status":"available","needs_auth":"no","worst_case":"unknown; the sources do not state the impact","analyst_note":"Confirm the impact (memory corruption or otherwise) and the affected version range from the Mozilla security advisory for this CVE.","how_to_check":"- Check the installed Firefox version via Help > About Firefox\n- Compare against `160` and `153.7` (ESR) as the fixed versions","plain_action":"Update Firefox to version 160 or Firefox ESR 153.7 through Help > About Firefox.","product_name":"","needs_analyst":true,"not_affected_if":["firefox-version-at-or-above-fix"],"who_is_affected":"unknown","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"no","severity_if_unknown":"unknown"},"cost_usd":0.000681,"input_tokens":4488,"output_tokens":465,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-124868':14A,17A '-2026':13A,16A '153.7':66C '160':62C 'allow':9A 'attack':44B 'boundari':3A,29B,48C 'browser':18B 'check':4A 'class':36B 'compon':27B,55C 'condit':30B,49C 'core':7A,24B,53C 'corrupt':11A 'cve':12A,15A 'dom':6A,23B,52C 'esr':65C 'firefox':1A,19B,21B,61C,64C 'fix':59C 'flaw':35B 'gain':46B 'html':26B,54C 'incorrect':2A,47C 'may':8A 'memori':10A,33B 'memory-safeti':32B 'mishandl':28B 'runtim':20B 'safeti':34B 'sourc':38B 'state':41B 'vulner':57C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Firefox to version 160 or Firefox ESR 153.7 through Help > About Firefox.","pkeys":[],"ptokens":[],"labels":["browser","firefox","runtime","unknown"],"campaign_type":null,"search_a":"'-124868':14A,17A '-2026':13A,16A 'allow':9A 'boundari':3A 'check':4A 'core':7A 'corrupt':11A 'cve':12A,15A 'dom':6A 'firefox':1A 'incorrect':2A 'may':8A 'memori':10A","search_b":"'attack':44B 'boundari':29B 'browser':18B 'class':36B 'compon':27B 'condit':30B 'core':24B 'dom':23B 'firefox':19B,21B 'flaw':35B 'gain':46B 'html':26B 'memori':33B 'memory-safeti':32B 'mishandl':28B 'runtim':20B 'safeti':34B 'sourc':38B 'state':41B","search_c":"'153.7':66C '160':62C 'boundari':48C 'compon':55C 'condit':49C 'core':53C 'dom':52C 'esr':65C 'firefox':61C,64C 'fix':59C 'html':54C 'incorrect':47C 'vulner':57C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T14:17:19+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-124868","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124868","severity":null,"published_at":"2026-11-10T14:17:19+00:00","modified_at":"2026-11-10T14:17:19+00:00","first_seen_at":"2026-11-10T14:22:14+00:00","fetched_at":"2026-11-10T14:22:14+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}