CVE-2021-39739

SMS content disclosure via ArrayMap log entries

Published Mar 30, 2022 · Updated Aug 4, 2024

Information disclosure in Android 12L Platform allows local users with System privileges to read SMS content from ArrayMap log entries. ArrayMap places SMS message content into logs, exposing sensitive values to principals able to read those records. Exploitation requires local System execution privileges but no user interaction, and the documented consequence is limited to SMS content disclosure.

CVSS severity3.3
Low
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Android 12L Platform allows local users with System privileges to read SMS content from ArrayMap log entries. ArrayMap places SMS message content into logs, exposing sensitive values to principals able to read those records. Exploitation requires local System execution privileges but no user interaction, and the documented consequence is limited to SMS content disclosure.

The record

CVE
CVE-2021-39739
Published
Mar 30, 2022
Updated
Aug 4, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-532, T1533
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 30, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=Android-12L

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google Cloud · Androidversion=Android-12L

Published CVSS scores

2.1NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
3.3NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1533Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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