CVE-2021-0651

Device denial of service via oversized app label

Published Oct 22, 2021 · Updated Aug 3, 2024

Denial of service in the Android Framework in Android 9 through 11 allows local users to interrupt a device via an oversized app label. PackageItemInfo.loadLabel returned an app-supplied label without enforcing the safe maximum length, allowing an enormous string to overwhelm the system. Exploitation requires installation and presentation of the malicious app with user interaction; the public record does not distinguish a hang, crash, or reboot.

CVSS severity5.5
Medium
EPSS probability0.13%
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 the Android Framework in Android 9 through 11 allows local users to interrupt a device via an oversized app label. PackageItemInfo.loadLabel returned an app-supplied label without enforcing the safe maximum length, allowing an enormous string to overwhelm the system. Exploitation requires installation and presentation of the malicious app with user interaction; the public record does not distinguish a hang, crash, or reboot.

The record

CVE
CVE-2021-0651
Published
Oct 22, 2021
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-20, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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-9 Android-10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android-11 Android-9 Android-10

Published CVSS scores

4.7NIST NVDAV:L/AC:M/Au:N/C:N/I:N/A:C
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

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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