{"id":"CVE-2026-117987","kind":"vulnerability","aliases":["CVE-2026-117987"],"related":[],"title":"Firefox: Graphics use-after-free fixed in Firefox 159 and ESR 153.6","description":"Use-after-free in the Graphics component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.","summary":"A use-after-free bug in Firefox's Graphics component was fixed in Firefox 159 and Firefox ESR 153.6. The sources do not say what an attacker can do with it.","severity":"unknown","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["desktop-browsers","firefox","other"],"not_affected_if":[],"how_to_check":"- Check the installed Firefox version in the browser's About page or with `firefox --version`\n- Check the ESR build with `firefox --version` on ESR installs, comparing against `153.6`","fix":"- Update Firefox to `159` or later\n- Update Firefox ESR to `153.6` or later","status":"open","published_at":"2026-10-27T14:16:56+00:00","first_seen_at":"2026-10-27T14:32:24+00:00","triaged_at":"2026-10-27T14:35:03+00:00","updated_at":"2026-10-27T14:35:03+00:00","category":"other","confidence":0.5,"triage":{"at":"2026-10-27T14:35:03Z","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: Graphics use-after-free fixed in Firefox 159 and ESR 153.6","impact":"medium","summary":"A use-after-free bug in Firefox's Graphics component was fixed in Firefox 159 and Firefox ESR 153.6. The sources do not say what an attacker can do with it.","category":"other","nicknames":[],"who_cares":["firefox","desktop-browsers"],"confidence":0.5,"needs_auth":"unknown","worst_case":"unknown","analyst_note":"Check the Mozilla security advisory for this CVE to confirm exploitability, trigger conditions and whether it is in the wild; the sources here give only the one-line description.","how_to_check":"- Check the installed Firefox version in the browser's About page or with `firefox --version`\n- Check the ESR build with `firefox --version` on ESR installs, comparing against `153.6`","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000535,"input_tokens":3230,"output_tokens":423,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-117987':16A,19A '-2026':15A,18A '153.6':13A,43B,70C '159':10A,39B,66C 'attack':51B 'browser':22B 'bug':29B 'compon':34B,59C 'cve':14A,17A 'desktop':21B 'desktop-brows':20B 'esr':12A,42B,69C 'firefox':1A,9A,23B,31B,38B,41B,65C,68C 'fix':7A,36B,63C 'free':6A,28B,55C 'graphic':2A,33B,58C 'say':48B 'sourc':45B 'use':4A,26B,53C 'use-after-fre':3A,25B,52C 'vulner':61C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T14:16:56+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-117987","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-117987","severity":null,"published_at":"2026-10-27T14:16:56+00:00","modified_at":"2026-10-27T14:16:56+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"}