# CVE-2021-25489: Samsung Mobile Devices Improper Input Validation Vulnerability > CVE-2021-25489: Samsung Mobile Devices Improper Input Validation Vulnerability. CVSS 3.3 (CVSS 3.1), in CISA KEV. Canonical: https://rewindex.com/cve/CVE-2021-25489 Last updated: 2025-10-21T23:25:30Z - Published: 2021-10-06 17:10 UTC · Updated: 2025-10-21 23:25 UTC · Assigner: Samsung Mobile - CVSS: 3.3 (CVSS 3.1) · Severity: Low · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - EPSS: 0.53%, 45th percentile (scored 2026-10-25) - CISA KEV: yes, added 2023-06-29, federal due date 2023-07-20, ransomware use: Unknown - CWE: CWE-20 ## Description Assuming radio permission is gained, missing input validation in modem interface driver prior to SMR Oct-2021 Release 1 results in format string bug leading to kernel panic. ## CISA required action Apply updates per vendor instructions or discontinue use of the product if updates are unavailable ## Affected vendors and products - Samsung Mobile: Samsung Mobile Devices ## References - [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-25489) - [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2021-25489) - [https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10](https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10) --- _Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_ --- Canonical: https://rewindex.com/cve/CVE-2021-25489 · Markdown: https://rewindex.com/cve/CVE-2021-25489.md · JSON: https://rewindex.com/api/v1/cves/CVE-2021-25489 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:08:57.629Z