Security readout for executives and security teams
Plain-English summary
CVE-2021-22386 is a Huawei smartphone vulnerability that may let a local attacker gain root privileges. The public record names EMUI 11.0.0, Magic UI 4.0.0, and HarmonyOS 2.0. No CVSS score or active exploitation evidence is provided in the supplied sources.
Executive priority
Prioritize this for fleets that include Huawei smartphones, especially managed executive, field, or privileged-user devices. Root privilege escalation can undermine device controls, but current public evidence does not show remote exploitation or known active attacks.
Technical view
The issue is described as a double-free flaw in a Huawei smartphone component. Successful local exploitation may cause root elevation of privileges. The available sources do not identify the component, attack path, fixed builds, or detailed remediation beyond Huawei and HarmonyOS security bulletin references.
Likely exposure
Exposure is most likely limited to Huawei smartphones running EMUI 11.0.0, Magic UI 4.0.0, or HarmonyOS 2.0. Organizations without Huawei mobile devices are unlikely to be affected based on the supplied evidence.
Exploitation context
The record describes local attackers, so exploitation appears to require prior access to the device or execution context on it. CISA KEV is false, and the supplied sources do not report active exploitation.
Researcher notes
Public details are sparse. The CVE record gives vulnerability class, affected platform families, and local root impact, but not the vulnerable component, fixed versions, exploit prerequisites, or proof-of-concept status. Treat validation as inventory and vendor-advisory driven.
Mitigation direction
- Inventory Huawei devices and identify EMUI, Magic UI, and HarmonyOS versions.
- Check Huawei’s June 2021 security bulletin for model-specific update guidance.
- Apply vendor-provided security updates where available for affected devices.
- Limit installation of untrusted apps on managed Huawei devices.
- Prioritize replacement or isolation where affected devices cannot be updated.
Validation and detection
- Confirm whether any managed devices run EMUI 11.0.0, Magic UI 4.0.0, or HarmonyOS 2.0.
- Compare each device’s security patch level against Huawei’s referenced June 2021 bulletin.
- Check MDM records for unsupported or unmanaged Huawei devices.
- Document devices that cannot receive vendor fixes and track risk acceptance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2021-22386 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://consumer.huawei.com/en/support/bulletin/2021/6/CVE reference · x_refsource_MISC
- https://device.harmonyos.com/cn/docs/security/update/oem_security_update_phone_202106-0000001165452077CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.