{"id":"CVE-2023-20963","kind":"vulnerability","aliases":["CVE-2023-20963"],"related":[],"title":"google android: In WorkSource, there is a possible parcel mismatch","description":"In WorkSource, there is a possible parcel mismatch. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-220302519","summary":"Android Framework contains a flaw that lets an app gain higher privileges after it is updated to a higher Target SDK, with no extra execution privileges needed. An attacker who gets a malicious app onto a device can escalate privileges beyond what the app is granted.","severity":"high","cvss":7.8,"epss":null,"exploited":true,"exploited_at":"2023-04-13T00:00:00+00:00","products":[{"name":"Android Framework","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"google android","fixed":[],"affected":"= 11.0","ecosystem":"vendor"},{"name":"google android","fixed":[],"affected":"= 12.0","ecosystem":"vendor"},{"name":"google android","fixed":[],"affected":"= 12.1","ecosystem":"vendor"},{"name":"google android","fixed":[],"affected":"= 13.0","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["android","exploited","infrastructure","mobile-fleet","self-hosted"],"not_affected_if":["unknown"],"how_to_check":"Check the device's Android security patch level under Settings > About phone; compare it with the Android security bulletin for the month listed in the sources. unknown for a fleet-wide command.","fix":"Apply the Android security update that includes the vendor fix for CVE-2023-20963, per the vendor instructions named in the CISA entry. Keep devices on supported OS builds.","status":"open","published_at":"2023-03-24T20:15:10+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:06:57+00:00","updated_at":"2026-10-23T22:29:04+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:06:57Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Android security update that includes the vendor fix for CVE-2023-20963, per the vendor instructions named in the CISA entry. Keep devices on supported OS builds.","reach":"local","impact":"high","summary":"Android Framework contains a flaw that lets an app gain higher privileges after it is updated to a higher Target SDK, with no extra execution privileges needed. An attacker who gets a malicious app onto a device can escalate privileges beyond what the app is granted.","category":"infrastructure","who_cares":["android","mobile-fleet","self-hosted"],"confidence":0.6,"needs_auth":"no","worst_case":"Installed app escalates privileges on the device after a Target SDK update.","analyst_note":"Sources lack affected and fixed Android versions and patch-level details; check the Android security bulletin for the fix month and the CISA KEV entry for vendor instructions.","how_to_check":"Check the device's Android security patch level under Settings > About phone; compare it with the Android security bulletin for the month listed in the sources. unknown for a fleet-wide command.","needs_analyst":true,"not_affected_if":["unknown"],"user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000494,"input_tokens":2782,"output_tokens":432,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-11':113C '-12':115C '-2023':12A,15A '-20963':13A,16A '-220302519':124C '12l':118C '13android':121C 'addit':100C 'android':2A,17A,20A,22A,24A,26A,27B,36B,112C,114C,117C,120C 'android-12l':116C 'android-13android':119C 'androidvers':111C 'app':44B,69B,79B 'attack':64B 'beyond':76B 'contain':38B 'could':91C 'cve':11A,14A 'devic':72B 'escal':74B,95C 'execut':60B,101C 'exploit':28B 'exploitation.product':110C 'extra':59B 'flaw':40B 'fleet':32B 'framework':18A,37B 'gain':45B 'get':66B 'googl':1A 'google':19A,21A,23A,25A 'grant':81B 'higher':46B,54B 'host':35B 'id':122C 'infrastructur':29B 'interact':105C 'lead':92C 'let':42B 'local':94C 'malici':68B 'mismatch':10A,89C 'mobil':31B 'mobile-fleet':30B 'need':62B,103C,108C 'onto':70B 'parcel':9A,88C 'possibl':8A,87C 'privileg':47B,61B,75B,97C,102C 'sdk':56B 'self':34B 'self-host':33B 'target':55B 'updat':51B 'user':104C 'worksourc':4A,83C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2023-03-24T20:15:10+00:00","kev":{"dateAdded":"2023-04-13","dueDate":"2023-05-04","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2023-20963","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-20963","severity":null,"published_at":"2023-04-13T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T10:39:06+00:00","note":null},{"source":"nvd","external_id":"CVE-2023-20963","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-20963","severity":null,"published_at":"2023-03-24T20:15:10+00:00","modified_at":"2026-06-17T05:31:19+00:00","first_seen_at":"2026-10-23T22:29:04+00:00","fetched_at":"2026-10-23T22:29:04+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"}