Wiz
Vulnerability DatabaseCVE-2021-0664

CVE-2021-0664: 
NixOS vulnerability analysis and mitigation

Overview

CVE-2021-0664 is a medium severity vulnerability identified in the CCU (Camera Control Unit) component affecting MediaTek chipsets. The vulnerability was disclosed in November 2021 and affects Android versions 10.0 and 11.0 running on various MediaTek platforms (MediaTek Bulletin).

Technical details

The vulnerability is classified as an improper restriction of operations within the bounds of a memory buffer (CWE-119) in the CCU component. The issue stems from a use-after-free condition that could lead to memory corruption. The vulnerability has been assigned a CVSS v3.1 base score indicating medium severity (NVD).

Impact

This vulnerability could lead to local escalation of privilege with System execution privileges needed. The exploitation does not require user interaction but does require System execution privileges (MediaTek Bulletin).

Mitigation and workarounds

The vulnerability affects multiple MediaTek chipsets including MT6765, MT6768, MT6771, MT6779, MT6785, MT6833, MT6853, MT6873, MT6877, MT6885, MT6889, MT8183, MT8385, MT8768, and MT8788. Device manufacturers have been notified and security patches were made available at least two months before the public disclosure (MediaTek Bulletin).

Additional resources

Source: This report was generated using AI

Related NixOS vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-20807MEDIUM6.7
  • NixOSNixOS
  • android
NoNoJan 06, 2026
CVE-2025-20806MEDIUM6.7
  • NixOSNixOS
  • android
NoNoJan 06, 2026
CVE-2025-20805MEDIUM6.7
  • NixOSNixOS
  • android
NoNoJan 06, 2026
CVE-2025-20804MEDIUM6.7
  • NixOSNixOS
  • android
NoNoJan 06, 2026
CVE-2025-20803MEDIUM6.7
  • NixOSNixOS
  • android
NoNoJan 06, 2026

Free Vulnerability Assessment

Benchmark your Cloud Security Posture

Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.

Request assessment

Additional Wiz resources

Cloud Vulnerability DB

Cloud Vulnerability DB

A community-led vulnerabilities database

Cloud Threat Landscape

Cloud Threat Landscape

A threat intelligence database

PEACH

PEACH

A tenant isolation framework

Get a personalized demo

Ready to see Wiz in action?

"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management
Get a demo