CVE-2022-20474

HIGH

Android - Local Privilege Escalation

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2022-20474. PoCs published by cxxsheng.

AI-analyzed exploit summary This repository contains a detailed analysis of CVE-2022-20474, focusing on the LazyValue mechanism in Android's Bundle deserialization process. It explains how a negative objectLength can lead to a self-changing Bundle, bypassing security checks.

Description

In readLazyValue of Parcel.java, there is a possible loading of arbitrary code into the System Settings app due to a confused deputy. This could lead to local escalation of privilege 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-240138294

Exploits (1)

nomisec WRITEUP 19 stars
by cxxsheng · poc
https://github.com/cxxsheng/CVE-2022-20474

This repository contains a detailed analysis of CVE-2022-20474, focusing on the LazyValue mechanism in Android's Bundle deserialization process. It explains how a negative objectLength can lead to a self-changing Bundle, bypassing security checks.

Classification
Writeup 90%
Attack Type
Deserialization
Complexity
Complex
Reliability
Theoretical
Target: Android Framework (versions affected by CVE-2022-20474)
No auth needed
Prerequisites: Understanding of Android Bundle serialization/deserialization · Knowledge of LazyValue mechanism
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0024
EPSS Percentile 15.3%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-276
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 Dec 13, 2022
Tracked Since Feb 18, 2026