---
id: "CVE-2020-0041"
kind: "vulnerability"
aliases: ["CVE-2020-0041"]
title: "Android Android Kernel: Android Kernel Out-of-Bounds Write Vulnerability"
severity: "high"
cvss: 7.8
epss: 0.03145
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Android Android Kernel", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["android", "exploited", "infrastructure", "kernel", "mobile-devices"]
not_affected_if: ["patched-device"]
published_at: "2020-03-10T20:15:21+00:00"
first_seen_at: "2026-10-23T19:11:53+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-0041", "first_seen_at": "2026-10-23T19:11:53+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-0041", "first_seen_at": "2026-10-23T19:13:44+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0041", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Android Android Kernel: Android Kernel Out-of-Bounds Write Vulnerability

An out-of-bounds write in the Android kernel's binder_transaction function, caused by a bad bounds check, lets a local app escalate its privileges. It was seen exploited in the wild as part of a chain with CVE-2019-2215 and CVE-2020-0069.

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

## Affected

- vendor:Android Android Kernel affected ? fixed ?

## How to check

Check the Android security patch level on the device (Settings > About phone) against the vendor bulletin; unknown for a fleet-wide command.

## Fix

Install the Android security update that includes the fix for CVE-2020-0041, per vendor instructions.

## Timeline

- 2026-10-23T19:11:53+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-0041
- 2026-10-23T19:13:44+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2020-0041
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2020-0041

## From the sources

Android Kernel binder_transaction of binder.c contains an out-of-bounds write vulnerability due to an incorrect bounds check that could allow for local privilege escalation. This vulnerability was observed chained with CVE-2019-2215 and CVE-2020-0069 under exploit chain "AbstractEmu."

CISA required action: Apply updates per vendor instructions.

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