CVE-2022-20494

MEDIUM

Android - Denial of Service via AutomaticZenRule Resource Exhaustion

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2022-20494. PoCs published by Supersonic, GabrieleDattile.

AI-analyzed exploit summary This PoC demonstrates a permanent denial-of-service (DoS) vulnerability in Android's NotificationManagerService by exploiting the addAutomaticZenRule API to exhaust device memory through malicious zen rules. The exploit targets Android API 24 and requires the ACCESS_NOTIFICATION_POLICY permission.

Description

In AutomaticZenRule of AutomaticZenRule.java, there is a possible persistent DoS due to resource exhaustion. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-243794204

Exploits (2)

nomisec WORKING POC 27 stars
by Supersonic · poc
https://github.com/Supersonic/CVE-2022-20494

This PoC demonstrates a permanent denial-of-service (DoS) vulnerability in Android's NotificationManagerService by exploiting the addAutomaticZenRule API to exhaust device memory through malicious zen rules. The exploit targets Android API 24 and requires the ACCESS_NOTIFICATION_POLICY permission.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Android (API 24 and later, up to Jan 2023 patch)
No auth needed
Prerequisites: Android device with API 24 or later (pre-Jan 2023 patch) · ACCESS_NOTIFICATION_POLICY permission granted
devstral-2 · analyzed Feb 16, 2026 Full analysis →
github WORKING POC
by GabrieleDattile · pythonpoc
https://github.com/GabrieleDattile/cve-pocs/tree/main/CVE/CVE-2022-20494

The repository contains a functional PoC for CVE-2022-20494, demonstrating a permanent DoS in Android's NotificationManagerService by exploiting the `addAutomaticZenRule` API to exhaust device memory. The PoC includes detailed technical descriptions and recovery instructions.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: Android NotificationManagerService (versions up to January 2023 patch)
Auth required
Prerequisites: Android device with API target 24 (Android 7.0 Nougat) · ACCESS_NOTIFICATION_POLICY permission
devstral-2 · analyzed Feb 27, 2026 Full analysis →

References (1)

Core 1

Scores

CVSS v3 5.5
EPSS 0.0043
EPSS Percentile 34.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (5)
google/android 10.0
google/android 11.0
google/android 12.0
google/android 12.1
google/android 13.0
Published Jan 26, 2023
Tracked Since Feb 18, 2026