Security readout for executives and security teams
Plain-English summary
CVE-2021-46742 is a Huawei mobile OS issue in the multi-window module. It may allow unauthorized insertion or tampering of Settings.Secure data, with potential availability impact. Public source details are limited, so business urgency depends on whether managed devices run the listed affected versions.
Executive priority
Treat this as a targeted mobile fleet hygiene issue, not an internet-wide emergency based on available evidence. Prioritize if Huawei devices are present in business-critical or regulated environments.
Technical view
The source bundle identifies unauthorized insertion and tampering of Settings.Secure data in the multi-window module. Affected products are HarmonyOS 2.0, EMUI 12.0.0/11.0.1/11.0.0/10.1.1/10.1.0, and Magic UI 4.0.0/3.1.1/3.1.0. CVSS, CWE, attack vector, and fixed build details are not provided.
Likely exposure
Exposure is most likely in organizations using Huawei devices on the listed HarmonyOS, EMUI, or Magic UI versions. The bundle does not provide CPEs, model lists, or exact patched builds, so validation must use vendor bulletin guidance and device inventory.
Exploitation context
The source bundle marks KEV as false, and no cited source states active exploitation. Public details do not describe exploit maturity, required privileges, user interaction, or remote/local attack conditions.
Researcher notes
Evidence is sparse: no CVSS, CWE, CPE, exploit prerequisites, or fixed build mapping appear in the provided bundle. Analysis should remain tied to Huawei’s bulletin and CVE metadata until vendor details are confirmed.
Mitigation direction
- Review Huawei April 2022 security bulletin for device-specific fixed versions.
- Update affected devices to vendor-supported firmware that includes the bulletin fix.
- Remove or isolate unsupported devices that cannot receive the vendor security update.
- Use MDM controls to enforce minimum OS and patch levels for affected fleets.
Validation and detection
- Inventory devices running the listed HarmonyOS, EMUI, and Magic UI versions.
- Compare each device patch level against Huawei April 2022 bulletin guidance.
- Confirm MDM compliance policies block or flag affected unpatched versions.
- Check support status for devices that cannot update to a fixed release.
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-2021-46742 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/2022/4/CVE reference · x_refsource_MISC
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202204-0000001224076294CVE 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.