{"id":"CVE-2026-121199","kind":"vulnerability","aliases":["CVE-2026-121199"],"related":[],"title":"Google Chrome on Mac: Chromoting flaw lets a local program read sensitive data","description":"Missing authorization in Chromoting in Google Chrome on on Mac prior to 157.0.8103.38 allowed a local attacker to obtain sensitive information via a local program. (Chromium security severity: Medium)","summary":"Chrome's Chromoting remote-desktop component on Mac lacks an authorization check before versions prior to 157.0.8103.38. A local program on the same machine can obtain sensitive information.","severity":"medium","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["chrome","chrome-remote-desktop","macos","runtime"],"not_affected_if":["chrome-up-to-date","no-local-untrusted-code","non-mac"],"how_to_check":"- Check the installed Chrome version in Chrome's About page or with `google-chrome --version` on Linux; Mac users check Chrome > About Google Chrome.\n- Confirm whether Chrome Remote Desktop (Chromoting) is installed or used on the Mac: unknown if the sources say more.","fix":"- Google Chrome on Mac: move to `157.0.8103.38` or later.","status":"open","published_at":"2026-11-03T21:17:28+00:00","first_seen_at":"2026-11-03T21:19:25+00:00","triaged_at":"2026-11-03T21:22:53+00:00","updated_at":"2026-11-03T21:22:53+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-11-03T21:22:53Z","model":"claude-haiku-5-5","output":{"fix":"- Google Chrome on Mac: move to `157.0.8103.38` or later.","reach":"local","title":"Google Chrome on Mac: Chromoting flaw lets a local program read sensitive data","impact":"low","summary":"Chrome's Chromoting remote-desktop component on Mac lacks an authorization check before versions prior to 157.0.8103.38. A local program on the same machine can obtain sensitive information.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","macos","chrome-remote-desktop"],"confidence":0.6,"fix_status":"available","needs_auth":"yes","worst_case":"local program reads sensitive information from Chrome on the Mac","analyst_note":"","how_to_check":"- Check the installed Chrome version in Chrome's About page or with `google-chrome --version` on Linux; Mac users check Chrome > About Google Chrome.\n- Confirm whether Chrome Remote Desktop (Chromoting) is installed or used on the Mac: unknown if the sources say more.","plain_action":"Update Google Chrome on your Mac to version 157.0.8103.38 or later.","needs_analyst":false,"not_affected_if":["chrome-up-to-date","non-mac","no-local-untrusted-code"],"who_is_affected":"Mac machines running Google Chrome older than 157.0.8103.38 are exposed, mainly where Chrome Remote Desktop (Chromoting) is used. The attacker must already run a program on the same machine, so the risk is local. Machines with current Chrome or without Mac Chrome can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000706,"input_tokens":4099,"output_tokens":593,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121199':16A,19A '-2026':15A,18A '157.0.8103.38':44B,68C 'allow':69C 'attack':72C 'author':38B,57C 'check':39B 'chrome':2A,20B,22B,27B,62C 'chrome-remote-desktop':21B 'chromium':81C 'chromot':5A,29B,59C 'compon':33B 'cve':14A,17A 'data':13A 'desktop':24B,32B 'flaw':6A 'googl':1A,61C 'inform':55B,76C 'lack':36B 'let':7A 'local':9A,46B,71C,79C 'mac':4A,35B,65C 'machin':51B 'maco':25B 'medium':84C 'miss':56C 'obtain':53B,74C 'prior':42B,66C 'program':10A,47B,80C 'read':11A 'remot':23B,31B 'remote-desktop':30B 'runtim':26B 'secur':82C 'sensit':12A,54B,75C 'sever':83C 'version':41B 'via':77C","nicknames":[],"mitigations":[],"who_affected":"Mac machines running Google Chrome older than 157.0.8103.38 are exposed, mainly where Chrome Remote Desktop (Chromoting) is used. The attacker must already run a program on the same machine, so the risk is local. Machines with current Chrome or without Mac Chrome can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Google Chrome on your Mac to version 157.0.8103.38 or later.","pkeys":[],"ptokens":[],"labels":["chrome","chromeremotedesktop","macos","medium","runtime"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:28+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121199","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121199","severity":null,"published_at":"2026-11-03T21:17:28+00:00","modified_at":"2026-11-03T21:17:28+00:00","first_seen_at":"2026-11-03T21:19:25+00:00","fetched_at":"2026-11-03T21:19:25+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"}