CVE-2022-21778

Local privilege escalation via VPU bounds check

Published Nov 8, 2022 · Updated May 1, 2025

Improper input validation in MediaTek VPU software on Android 10.0 through 12.0 allows local users to disclose information. The VPU component performs an incorrect bounds check, allowing an out-of-bounds read, although MediaTek has not disclosed the affected function or input field. Exploitation requires System execution privileges and no user interaction; the vendor reports local privilege escalation as the resulting impact.

CVSS severity6.7
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in MediaTek VPU software on Android 10.0 through 12.0 allows local users to disclose information. The VPU component performs an incorrect bounds check, allowing an out-of-bounds read, although MediaTek has not disclosed the affected function or input field. Exploitation requires System execution privileges and no user interaction; the vendor reports local privilege escalation as the resulting impact.

The record

CVE
CVE-2022-21778
Published
Nov 8, 2022
Updated
May 1, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, CWE-20, T1404
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Nov 8, 2022CVE publishedPublication date reported by the CVE source.
  2. May 1, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.7NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-20Improper Input Validation
T1404Exploitation for Privilege Escalation

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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