CVE-2022-20016

Local privilege escalation via vow locking

Published Jan 4, 2022 · Updated Aug 3, 2024

Improper restriction of operations within the bounds of a memory buffer in the vow driver in MediaTek Android 10.0 and 11.0 allows local users to gain System privileges via memory corruption. Improper locking in the driver permits concurrent access to shared state, producing the corrupted memory condition. Exploitation requires existing System-level execution privileges and no user interaction; the resulting impact is privilege escalation with confidentiality, integrity, and availability consequences.

CVSS severity6.7
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

Improper restriction of operations within the bounds of a memory buffer in the vow driver in MediaTek Android 10.0 and 11.0 allows local users to gain System privileges via memory corruption. Improper locking in the driver permits concurrent access to shared state, producing the corrupted memory condition. Exploitation requires existing System-level execution privileges and no user interaction; the resulting impact is privilege escalation with confidentiality, integrity, and availability consequences.

The record

CVE
CVE-2022-20016
Published
Jan 4, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-119, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 4, 2022CVE 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.7NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.6NVDAV:L/AC:L/Au:N/C:P/I:P/A:P

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1068Exploitation 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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