CVE-2023-21280

Permanent denial of service via invalid receiver registration

Published Aug 14, 2023 · Updated Oct 9, 2024

Uncontrolled resource consumption in Android 12, 12L, and 13 allows local users to cause a permanent service interruption. MediaSessionRecord.setMediaButtonBroadcastReceiver accepts invalid or nonexistent receiver component names without first verifying that they resolve to installed broadcast receivers. An unprivileged local app can trigger the condition without user interaction, and the resulting availability loss persists.

CVSS severity5.5
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Android 12, 12L, and 13 allows local users to cause a permanent service interruption. MediaSessionRecord.setMediaButtonBroadcastReceiver accepts invalid or nonexistent receiver component names without first verifying that they resolve to installed broadcast receivers. An unprivileged local app can trigger the condition without user interaction, and the resulting availability loss persists.

The record

CVE
CVE-2023-21280
Published
Aug 14, 2023
Updated
Oct 9, 2024
Vendor
Google
Product
Android
Classifications
CWE-400, T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 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?

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

  1. Affected versionversion=12
  2. Affected versionversion=12L
  3. Affected versionversion=13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google · Androidversion=12; version=12L; version=13

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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-400Uncontrolled Resource Consumption
T1499.001OS Exhaustion Flood

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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