---
id: "CVE-2021-25372"
kind: "vulnerability"
aliases: ["CVE-2021-25372"]
title: "samsung android: An improper boundary check in DSP driver prior to SMR Mar-2021 Release 1 allows out of bounds memory access"
severity: "high"
cvss: 7.2
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Samsung Mobile Devices", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "samsung android", "fixed": [], "affected": "= 10.0", "ecosystem": "vendor"}, {"name": "samsung android", "fixed": [], "affected": "= 11.0", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["android", "exploited", "infrastructure", "mobile-devices", "samsung"]
not_affected_if: ["unknown"]
published_at: "2021-03-26T19:15:12+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-25372", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-25372", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# samsung android: An improper boundary check in DSP driver prior to SMR Mar-2021 Release 1 allows out of bounds memory access

Samsung mobile devices have an improper boundary check in the DSP driver that allows out-of-bounds memory access. CISA lists it as actively exploited, and the sources do not say what an attacker gets beyond the memory access.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Samsung Mobile Devices affected ? fixed ?
- vendor:samsung android affected = 10.0 fixed ?
- vendor:samsung android affected = 11.0 fixed ?

## Fix

Apply updates per vendor instructions, or discontinue use of the product if updates are unavailable.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-25372
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2021-25372

## From the sources

Samsung mobile devices contain an improper boundary check vulnerability within DSP driver that allows for out-of-bounds memory access.

CISA required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_