Security readout for executives and security teams
Plain-English summary
CVE-2021-40013 is an improper permission control issue in Huawei's Bluetooth module. The provided sources say successful exploitation could affect integrity, but do not provide CVSS, severity, attack requirements, or fixed versions.
Executive priority
Prioritize identification over emergency response. Business urgency depends on whether affected Huawei devices are present and supportable, because severity and exploit evidence are not provided.
Technical view
The CVE describes improper permission control in the Bluetooth module for Huawei EMUI and Magic UI. Affected versions listed are EMUI 10.1.0, 10.1.1, 11.0.0, 12.0.0 and Magic UI 3.1.0, 3.1.1, 4.0.0. Impact is stated only as integrity.
Likely exposure
Exposure is limited to devices running the listed Huawei EMUI or Magic UI versions. Organizations with Huawei mobile fleets should prioritize asset confirmation before assuming impact.
Exploitation context
The source bundle does not show CISA KEV listing, active exploitation, public exploit availability, or technical exploitation prerequisites. Treat exploitation status as unconfirmed.
Researcher notes
Public details are sparse: no CVSS vector, CWE, attack path, privilege requirement, or fixed build is included in the supplied bundle. Avoid inferring exploitability beyond the stated integrity impact.
Mitigation direction
- Inventory Huawei devices and record EMUI or Magic UI versions.
- Review Huawei's July 2022 security bulletin for vendor guidance.
- Apply applicable Huawei security updates when available for affected devices.
- Reduce exposure of unsupported affected devices through replacement or restricted use.
Validation and detection
- Check device OS version against the affected EMUI and Magic UI versions.
- Confirm Bluetooth module exposure on managed Huawei devices.
- Verify whether Huawei's July 2022 guidance applies to each device model.
- Document update status or unsupported-device exceptions.
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-2021-40013 mapping review
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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/2022/7/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.