CVE-2020-0069 — Mediatek Multiple Chipsets Insufficient Input Validation Vulnerability

Overview

Multiple MediaTek chipsets contain an insufficient input validation vulnerability and have missing SELinux restrictions in the Command Queue drivers ioctl handlers. This causes an out-of-bounds write leading to privilege escalation. This vulnerability was observed chained with CVE-2019-2215 and CVE-2020-0041 under exploit chain "AbstractEmu."

Vulnerability details

CVE ID

CVE-2020-0069

Vulnerability

Mediatek Multiple Chipsets Insufficient Input Validation Vulnerability

Vendor

MediaTek

Affected products

MediaTek: Multiple Chipsets

Severity

HIGH

Exploitation status

Actively exploited in the wild (CISA KEV)

Published

2021-11-03

Remediation guidance

CVE-2020-0069 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.

Apply the vendor's official security update for MediaTek the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.

Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.

Authoritative references

• NVD — National Vulnerability Database
• MITRE CVE Record
• CISA Known Exploited Vulnerabilities Catalog
• FIRST EPSS — Exploit Prediction Scoring