CVE-2021-0424

System crash via missing memory-driver bounds check

Published Sep 27, 2021 · Updated Aug 3, 2024

Denial of service in MediaTek smartphone chipsets on Android 10.0 and 11.0 allows local users to crash the system. The memory management driver processes an unspecified input without a required bounds check, reaching an invalid condition that crashes the device. A local low-privileged context is sufficient, and exploitation requires neither additional execution privileges nor user interaction; MediaTek has not disclosed the affected function or input.

CVSS severity5.5
Medium
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

Denial of service in MediaTek smartphone chipsets on Android 10.0 and 11.0 allows local users to crash the system. The memory management driver processes an unspecified input without a required bounds check, reaching an invalid condition that crashes the device. A local low-privileged context is sufficient, and exploitation requires neither additional execution privileges nor user interaction; MediaTek has not disclosed the affected function or input.

The record

CVE
CVE-2021-0424
Published
Sep 27, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-770, T1642
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 27, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P
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-770Allocation of Resources Without Limits or Throttling
T1642Endpoint 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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