Security readout for executives and security teams
Plain-English summary
CVE-2021-46789 is a Huawei EMUI/Magic UI secure OS module configuration issue. The stated business impact is availability, meaning affected devices or services could be disrupted. The public source bundle does not provide CVSS, CWE, exploit details, or confirmed fixed versions.
Executive priority
Treat this as a targeted mobile-platform hygiene item, not an emergency, unless affected Huawei devices support critical operations. The lack of severity scoring and exploit evidence lowers urgency, but availability impact still warrants inventory and vendor update validation.
Technical view
The CVE describes configuration defects in the secure OS module affecting EMUI 10.0.0 through 12.0.0 and Magic UI 3.0.0 through 3.1.1. Successful exploitation can affect availability. Public details do not identify the exact misconfiguration, attack prerequisites, or remediation build numbers.
Likely exposure
Exposure is limited to devices running the listed EMUI or Magic UI versions. Organizations with managed Huawei mobile fleets should inventory OS versions and compare them against the affected ranges in the Huawei bulletins.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Public exploitability context is sparse, so assess this as an availability-risk issue until Huawei guidance or internal testing provides more detail.
Researcher notes
Evidence is incomplete: no CVSS vector, CWE, root-cause detail, exploit prerequisites, or named fixed builds are provided in the bundle. Avoid asserting exploitability beyond the stated availability impact and affected version ranges.
Mitigation direction
- Inventory Huawei devices and record EMUI or Magic UI versions.
- Review Huawei May and June 2022 bulletins for vendor remediation guidance.
- Apply Huawei-recommended security updates where available.
- Prioritize devices supporting critical operations or shared services.
- Monitor Huawei advisories for clearer fixed-build information.
Validation and detection
- Confirm whether any managed device runs an affected EMUI version.
- Confirm whether any managed device runs an affected Magic UI version.
- Verify security patch status against Huawei bulletin guidance.
- Document devices where fixed-build evidence is unavailable.
- Track remediation exceptions through normal vulnerability management.
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-2021-46789 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/2022/5/CVE reference · x_refsource_MISC
- https://consumer.huawei.com/en/support/bulletin/2022/6/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.