---
id: "CVE-2023-21237"
kind: "vulnerability"
aliases: ["CVE-2023-21237"]
title: "google android: In applyRemoteView of NotificationContentInflater.java, there is a possible way to hide foreground service\u2026"
severity: "medium"
cvss: 6.2
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Android Pixel", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "google android", "fixed": [], "affected": "= 13.0", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["android", "exploited", "infrastructure", "mobile-fleet", "pixel"]
not_affected_if: ["patched-device"]
published_at: "2023-06-28T18:15:16+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T22:29:05+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-21237", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-21237", "first_seen_at": "2026-10-23T22:29:05+00:00"}]
---

# google android: In applyRemoteView of NotificationContentInflater.java, there is a possible way to hide foreground service…

An Android Pixel Framework flaw lets an app hide its foreground service notification from the user. A local attacker can use this to disclose sensitive information without the user noticing.

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

## Affected

- vendor:Android Pixel affected ? fixed ?
- vendor:google android affected = 13.0 fixed ?

## Fix

Apply the Android security patch for the affected Pixel build per vendor instructions; the sources do not name the patched version.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-21237
- 2026-10-23T22:29:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2023-21237

## From the sources

Android Pixel contains a vulnerability in the Framework component, where the UI may be misleading or insufficient, providing a means to hide a foreground service notification. This could enable a local attacker to disclose sensitive information.

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

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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_