Security readout for executives and security teams
Plain-English summary
CVE-2021-40024 is a Huawei WLAN module interface information disclosure issue. If exploited, it may expose data that should remain confidential. The sources identify HarmonyOS 2.0 and 2.1 and EMUI 12.0.0 as affected, but they do not provide CVSS scoring, detailed prerequisites, or confirmed impact scope.
Executive priority
Handle through the mobile device patch and inventory program, with higher urgency for Huawei devices used for sensitive communications or regulated data. Current evidence does not support emergency response language because severity, exploitability, and active exploitation are not established in the supplied sources.
Technical view
Huawei describes an information disclosure vulnerability in the implementation of WLAN module interfaces. Affected products listed in the source bundle are HarmonyOS 2.0, HarmonyOS 2.1, and EMUI 12.0.0. No CWE, CVSS vector, exploit mechanics, or detailed attack conditions are provided in the supplied sources.
Likely exposure
Exposure is most likely limited to Huawei devices running HarmonyOS 2.0, HarmonyOS 2.1, or EMUI 12.0.0. The provided sources do not support expanding impact to other Huawei platforms, WLAN components, or third-party products.
Exploitation context
The source bundle does not cite public exploitation, and the CVE is not marked as CISA KEV. Treat exploitation status as unconfirmed. The available description only states that successful exploitation may affect data confidentiality.
Researcher notes
Key gaps are CVSS, CWE, attack prerequisites, affected device models, and fixed build identifiers. Research should stay anchored to Huawei bulletin details and device firmware evidence. Do not assume exploitability from WLAN proximity or interface exposure without vendor or primary-source confirmation.
Mitigation direction
- Inventory Huawei devices and record HarmonyOS or EMUI versions.
- Review Huawei September 2022 security bulletins for applicable updates.
- Apply vendor-provided firmware or security updates where available.
- Prioritize devices handling sensitive business, executive, or regulated data.
- Monitor Huawei advisories for corrected versions or additional guidance.
Validation and detection
- Confirm whether any managed devices run HarmonyOS 2.0 or 2.1.
- Confirm whether any managed devices run EMUI 12.0.0.
- Check device security patch status against Huawei bulletin guidance.
- Verify mobile device management inventories include Huawei personal and corporate devices.
- Document compensating controls if vendor updates are unavailable.
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-2021-40024 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://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202209-0000001392278845CVE reference · x_refsource_MISC
- https://consumer.huawei.com/en/support/bulletin/2022/9/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.