CVEs-PoC/2021/CVE-2021-25471.md

### [CVE-2021-25471](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25471)
![](https://img.shields.io/static/v1?label=Product&message=Samsung%20Mobile%20Devices&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=O(8.1)%2C%20P(9.0)%2C%20Q(10.0)%20devices%20with%20Exynos%20CP%20chipsets%3C%20SMR%20Oct-2021%20Release%201%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-20%3A%20Improper%20Input%20Validation&color=brighgreen)

### Description

A lack of replay attack protection in Security Mode Command process prior to SMR Oct-2021 Release 1 can lead to denial of service on mobile network connection and battery depletion.

### POC

#### Reference
- https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10

#### Github
No PoCs found on GitHub currently.