CVE-2022-20068

Local privilege escalation via symlink following

Published Apr 11, 2022 · Updated Aug 3, 2024

Symlink following in MediaTek mobile_log_d on Android 10.0, 11.0, and 12.0 allows local users to escalate privileges. The daemon improperly resolves a filesystem path and follows a crafted symbolic link; MediaTek has not disclosed the specific file operation. Exploitation requires System execution privileges on a device with an affected MediaTek chipset and needs no user interaction.

CVSS severity6.7
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

Symlink following in MediaTek mobile_log_d on Android 10.0, 11.0, and 12.0 allows local users to escalate privileges. The daemon improperly resolves a filesystem path and follows a crafted symbolic link; MediaTek has not disclosed the specific file operation. Exploitation requires System execution privileges on a device with an affected MediaTek chipset and needs no user interaction.

The record

CVE
CVE-2022-20068
Published
Apr 11, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-61, T1404
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 11, 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

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
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-61UNIX Symbolic Link (Symlink) Following
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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