{"id":"CVE-2026-117964","kind":"vulnerability","aliases":["CVE-2026-117964"],"related":[],"title":"Firefox: use-after-free in Panning and Zooming component, fixed in 159","description":"Use-after-free in the Panning and Zooming component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.","summary":"A use-after-free bug in the Panning and Zooming component of Firefox lets memory be reused after it is freed. The sources do not say what an attacker gains from triggering it.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["browsers","desktop","firefox","runtime"],"not_affected_if":[],"how_to_check":"- Check the installed Firefox version against `159` and the ESR line against `153.6`.\n- unknown beyond the version comparison.","fix":"- Update Firefox to `159` or later.\n- Update Firefox ESR to `153.6` or later.","status":"open","published_at":"2026-10-27T14:16:52+00:00","first_seen_at":"2026-10-27T14:32:24+00:00","triaged_at":"2026-10-27T14:35:24+00:00","updated_at":"2026-10-27T14:35:24+00:00","category":"runtime","confidence":0.4,"triage":{"at":"2026-10-27T14:35:24Z","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: use-after-free in Panning and Zooming component, fixed in 159","impact":"high","summary":"A use-after-free bug in the Panning and Zooming component of Firefox lets memory be reused after it is freed. The sources do not say what an attacker gains from triggering it.","category":"runtime","nicknames":[],"who_cares":["firefox","desktop","browsers"],"confidence":0.4,"needs_auth":"unknown","worst_case":"unknown; memory corruption may allow code execution, not confirmed by sources","analyst_note":"Check the Mozilla security advisory for the impact, trigger conditions and whether it is exploitable, since the sources give only the description.","how_to_check":"- Check the installed Firefox version against `159` and the ESR line against `153.6`.\n- unknown beyond the version comparison.","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Firefox and Firefox ESR builds older than the fixed versions are affected. The sources do not say which configurations or platforms are most exposed, so unknown.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000551,"input_tokens":3238,"output_tokens":455,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-117964':16A,19A '-2026':15A,18A '153.6':77C '159':13A,73C 'attack':53B 'browser':20B 'bug':29B 'compon':10A,35B,66C 'cve':14A,17A 'desktop':21B 'esr':76C 'firefox':1A,22B,37B,72C,75C 'fix':11A,70C 'free':5A,28B,60C 'freed':45B 'gain':54B 'let':38B 'memori':39B 'pan':7A,32B,63C 'reus':41B 'runtim':23B 'say':50B 'sourc':47B 'trigger':56B 'use':3A,26B,58C 'use-after-fre':2A,25B,57C 'vulner':68C 'zoom':9A,34B,65C","nicknames":[],"mitigations":[],"who_affected":"Firefox and Firefox ESR builds older than the fixed versions are affected. The sources do not say which configurations or platforms are most exposed, so unknown.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T14:16:52+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-117964","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-117964","severity":null,"published_at":"2026-10-27T14:16:52+00:00","modified_at":"2026-10-27T14:16:52+00:00","first_seen_at":"2026-10-27T14:32:24+00:00","fetched_at":"2026-10-27T14:32:24+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"}