CVE-2023-21137

Persistent denial of service via malformed job data

Published Jun 15, 2023 · Updated Dec 18, 2024

Denial of service in Android 11, 12, 12L, and 13 JobStore allows local users to persistently interrupt affected devices. JobStore parses persisted job-map records without catching exceptions raised by malformed values, so invalid scheduled-job data fails again during loading. A local low-privileged app can schedule the invalid job without user interaction; after reboot, repeated loading failure persistently interrupts device operation.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Android 11, 12, 12L, and 13 JobStore allows local users to persistently interrupt affected devices. JobStore parses persisted job-map records without catching exceptions raised by malformed values, so invalid scheduled-job data fails again during loading. A local low-privileged app can schedule the invalid job without user interaction; after reboot, repeated loading failure persistently interrupts device operation.

The record

CVE
CVE-2023-21137
Published
Jun 15, 2023
Updated
Dec 18, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-754, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 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=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

5.5NVDCVSS: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-754Improper Check for Unusual or Exceptional Conditions
T1499Endpoint Denial of Service

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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