{"id":"CVE-2026-21003","aliases":["EUVD-2026-21816","GHSA-8x4h-8ccm-x267"],"status":"published","title":"Improper input validation in data related to network restrictions prior to SMR Apr-2026 Release 1...","description":"Improper input validation in data related to network restrictions prior to SMR Apr-2026 Release 1 allows physical attackers to bypass the restrictions.","severity":{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00168,"percentile":0.06177,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2026-04-13T04:57:14Z","modified":"2026-10-26T21:10:00Z","exploits":[{"source":"pocgithub","id":"George0Papasotiriou/CVE-2026-21003-JWT-none-Algorithm-Bypass-via-kid-Header-Omission","title":"George0Papasotiriou/CVE-2026-21003-JWT-none-Algorithm-Bypass-via-kid-Header-Omission","date":"2026-08-04","url":"https://github.com/George0Papasotiriou/CVE-2026-21003-JWT-none-Algorithm-Bypass-via-kid-Header-Omission"}],"products":[{"vendor":"samsung","product":"android"},{"vendor":"samsung mobile","product":"samsung mobile devices"}],"references":[{"url":"https://security.samsungmobile.com/securityUpdate.smsb?year=2026\u0026month=04","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21003"},{"url":"https://github.com/advisories/GHSA-8x4h-8ccm-x267"}],"sources":{"cve":[{"id":"CVE-2026-21003","description":"Improper input validation in data related to network restrictions prior to SMR Apr-2026 Release 1 allows physical attackers to bypass the restrictions.","status":"published","published":"2026-04-13T04:57:14.913Z","modified":"2026-04-13T18:06:17.002Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-21816","description":"Improper input validation in data related to network restrictions prior to SMR Apr-2026 Release 1 allows physical attackers to bypass the restrictions.","status":"published","published":"2026-04-13T04:57:14Z","modified":"2026-04-13T18:06:17Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T19:24:27.467761Z"}],"ghsa":[{"id":"GHSA-8x4h-8ccm-x267","title":"Improper input validation in data related to network restrictions prior to SMR Apr-2026 Release 1...","description":"Improper input validation in data related to network restrictions prior to SMR Apr-2026 Release 1 allows physical attackers to bypass the restrictions.","status":"published","published":"2026-04-13T06:30:30Z","modified":"2026-04-16T18:32:28Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium"}],"updated_at":"2026-11-02T15:07:31.795355Z"}],"nvd":[{"id":"CVE-2026-21003","description":"Improper input validation in data related to network restrictions prior to SMR Apr-2026 Release 1 allows physical attackers to bypass the restrictions.","status":"published","published":"2026-04-13T05:16:02.23Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"4.0","score":5.2,"vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:12:14.37744Z"}]}}