# CVE-2021-25397

## Summary

- **CVE ID:** CVE-2021-25397
- **Severity:** MEDIUM
- **CVSS Score:** 6.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L)
- **CWE:** CWE-926
- **Published:** Jun 11, 2021
- **Last Modified:** Mar 13, 2026

## Description

An improper access control vulnerability in TelephonyUI prior to SMR MAY-2021 Release 1 allows local attackers to write arbitrary files of telephony process via untrusted applications.

## Affected Products

- Samsung Mobile — Samsung Mobile Devices  (P(9.0), Q(10.0), R(11.0))
- Samsung Mobile — Samsung Mobile Devices (P(9.0), Q(10.0), R(11.0))

## References

- [CNA](https://blog.oversecured.com/Two-weeks-of-securing-Samsung-devices-Part-1/)
- [CNA](https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=5)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.02%
- **EPSS Percentile:** 4.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._