CVE-2022-20541

Local information disclosure via unchecked ioctl buffer read

Published Dec 16, 2022 · Updated Apr 21, 2025

Out-of-bounds read in Android 13's NXP NFC HAL allows local users with System privileges to read memory during an ioctl operation. phNxpNciHal_ioctl in phNxpNciHal.cc accesses data without first verifying that the requested read stays within the buffer. Exploitation requires System execution privileges and user interaction, and the documented impact is limited to local information disclosure.

CVSS severity4.2
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Android 13's NXP NFC HAL allows local users with System privileges to read memory during an ioctl operation. phNxpNciHal_ioctl in phNxpNciHal.cc accesses data without first verifying that the requested read stays within the buffer. Exploitation requires System execution privileges and user interaction, and the documented impact is limited to local information disclosure.

The record

CVE
CVE-2022-20541
Published
Dec 16, 2022
Updated
Apr 21, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-125, T1005
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=Android-13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google Cloud · Androidversion=Android-13

Published CVSS scores

4.2NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1005Data from Local System

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

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Your stack

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