{"id":"CVE-2023-21237","kind":"vulnerability","aliases":["CVE-2023-21237"],"related":[],"title":"google android: In applyRemoteView of NotificationContentInflater.java, there is a possible way to hide foreground service…","description":"Android Pixel contains a vulnerability in the Framework component, where the UI may be misleading or insufficient, providing a means to hide a foreground service notification. This could enable a local attacker to disclose sensitive information.\n\nCISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","summary":"An Android Pixel Framework flaw lets an app hide its foreground service notification from the user. A local attacker can use this to disclose sensitive information without the user noticing.","severity":"medium","cvss":6.2,"epss":null,"exploited":true,"exploited_at":"2024-03-05T00:00:00+00:00","products":[{"name":"Android Pixel","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"google android","fixed":[],"affected":"= 13.0","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["android","exploited","infrastructure","mobile-fleet","pixel"],"not_affected_if":["patched-device"],"how_to_check":null,"fix":"Apply the Android security patch for the affected Pixel build per vendor instructions; the sources do not name the patched version.","status":"open","published_at":"2023-06-28T18:15:16+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T21:02:17+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:02:17Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Android security patch for the affected Pixel build per vendor instructions; the sources do not name the patched version.","reach":"local","impact":"medium","summary":"An Android Pixel Framework flaw lets an app hide its foreground service notification from the user. A local attacker can use this to disclose sensitive information without the user noticing.","category":"infrastructure","who_cares":["android","pixel","mobile-fleet"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Malicious local app hides its activity and discloses sensitive information.","analyst_note":"Find the Android security bulletin entry for CVE-2023-21237 to confirm patched build and any special conditions; CISA KEV lists it as exploited in the wild.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["patched-device"],"user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000449,"input_tokens":2822,"output_tokens":334,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2023':17A,20A '-21237':18A,21A 'action':101C 'android':2A,22A,25A,26B,34B,63C 'app':40B 'appli':102C 'applyremoteview':4A 'attack':51B,94C 'cisa':99C 'compon':71C 'contain':65C 'could':90C 'cve':16A,19A 'disclos':56B,96C 'discontinu':108C 'enabl':91C 'exploit':27B 'flaw':37B 'fleet':31B 'foreground':14A,43B,86C 'framework':36B,70C 'googl':1A 'google':24A 'hide':13A,41B,84C 'inform':58B,98C 'infrastructur':28B 'instruct':106C 'insuffici':79C 'let':38B 'local':50B,93C 'may':75C 'mean':82C 'mislead':77C 'mitig':103C,114C 'mobil':30B 'mobile-fleet':29B 'notic':62B 'notif':45B,88C 'notificationcontentinflater.java':6A 'per':104C 'pixel':23A,32B,35B,64C 'possibl':10A 'product':112C 'provid':80C 'requir':100C 'sensit':57B,97C 'servic':15A,44B,87C 'ui':74C 'unavail':116C 'use':53B,109C 'user':48B,61B 'vendor':105C 'vulner':67C 'way':11A 'without':59B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2023-06-28T18:15:16+00:00","kev":{"dateAdded":"2024-03-05","dueDate":"2024-03-26","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2023-21237","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-21237","severity":null,"published_at":"2024-03-05T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T10:39:05+00:00","note":null},{"source":"nvd","external_id":"CVE-2023-21237","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-21237","severity":null,"published_at":"2023-06-28T18:15:16+00:00","modified_at":"2026-06-17T05:32:08+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+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"}