CVE-2023-20909

Local activity information disclosure via missing privilege check

Published Apr 19, 2023 · Updated Feb 5, 2025

Information disclosure in Android 11, 12, 12L, and 13 allows local users to read other apps' activity information without interaction. RunningTasks.java returns activity details from a UID different from the task's hosting app without checking the caller's privilege or stripping sensitive fields. A low-privileged app can query the affected task APIs; exposure is limited to local activity metadata, with no reported data modification.

CVSS severity5.5
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

Information disclosure in Android 11, 12, 12L, and 13 allows local users to read other apps' activity information without interaction. RunningTasks.java returns activity details from a UID different from the task's hosting app without checking the caller's privilege or stripping sensitive fields. A low-privileged app can query the affected task APIs; exposure is limited to local activity metadata, with no reported data modification.

The record

CVE
CVE-2023-20909
Published
Apr 19, 2023
Updated
Feb 5, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-862, T1418
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 19, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 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-11 Android-12 Android-12L Android-13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=Android-11 Android-12 Android-12L Android-13

Published CVSS scores

5.5CISA ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1418Software Discovery

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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