CVE-2022-20338

Local privilege escalation via malformed parcelled URI

Published Aug 11, 2022 · Updated Mar 6, 2026

Improper input validation in Android 11, 12, and 12L allows local users to gain privileges through a malformed parcelled URI. HierarchicalUri.readFrom in Uri.java rebuilt a path without considering the parcelled scheme or authority, allowing inconsistent URI interpretation after unparcelling. Exploitation requires a low-privileged local process but no user interaction and affects integrity rather than confidentiality or availability.

CVSS severity3.3
Low
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper input validation in Android 11, 12, and 12L allows local users to gain privileges through a malformed parcelled URI. HierarchicalUri.readFrom in Uri.java rebuilt a path without considering the parcelled scheme or authority, allowing inconsistent URI interpretation after unparcelling. Exploitation requires a low-privileged local process but no user interaction and affects integrity rather than confidentiality or availability.

The record

CVE
CVE-2022-20338
Published
Aug 11, 2022
Updated
Mar 6, 2026
Vendor
Google Cloud
Product
Android
Classifications
CWE-20, T1404
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Android-11 Android-12 Android-12L

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google Cloud · Androidversion=Android-11 Android-12 Android-12L

Published CVSS scores

3.3CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1404Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo