Security readout for executives and security teams
Plain-English summary
This CVE concerns a Huawei smartphone memory-buffer handling flaw. The public description says successful exploitation may allow certain code to execute. The source bundle does not provide severity, CVSS, attack vector, required privileges, or affected device models, so urgency depends on whether managed Huawei phones run the named software versions.
Executive priority
Assign an owner to verify Huawei smartphone exposure. If affected versions exist in the fleet, prioritize vendor update validation because the stated impact includes possible code execution, even though public severity and exploitation evidence are incomplete.
Technical view
CVE-2021-22390 affects Huawei EMUI 11.0.0 and Magic UI 4.0.0. The issue is described as a memory buffer improper operation limit vulnerability with possible code execution impact. No CWE, CVSS vector, proof of exploitation, or detailed remediation text is included in the provided bundle.
Likely exposure
Exposure is limited by the provided evidence to Huawei smartphones running EMUI 11.0.0 or Magic UI 4.0.0. The bundle does not identify specific device models, regions, carriers, configurations, or later affected versions.
Exploitation context
The bundle does not show active exploitation, and KEV is false. It also does not describe whether exploitation is local, remote, user-assisted, authenticated, or configuration-dependent. Treat exploitability details as unknown.
Researcher notes
Public data is sparse. The record names affected Huawei software versions and a possible code-execution outcome, but lacks CVSS, CWE, attack vector, exploit prerequisites, and model-level scope. Avoid assuming exploitability beyond the vendor and CVE descriptions.
Mitigation direction
- Inventory Huawei smartphones and record EMUI or Magic UI versions.
- Review Huawei's June 2021 security bulletin for vendor remediation details.
- Apply available Huawei firmware or security updates through approved device-management channels.
- Prioritize managed devices running EMUI 11.0.0 or Magic UI 4.0.0.
- Restrict unsupported or unpatchable affected devices from sensitive corporate access.
Validation and detection
- Confirm whether any managed devices report EMUI 11.0.0 or Magic UI 4.0.0.
- Compare device patch status against Huawei's June 2021 bulletin guidance.
- Verify updated devices no longer report the affected software versions.
- Check mobile-device-management logs for failed or deferred Huawei updates.
- Document any unsupported devices requiring compensating access controls.
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-2021-22390 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
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.