Security readout for executives and security teams
Plain-English summary
CVE-2021-22374 is a Huawei smartphone vulnerability affecting specific EMUI and Magic UI versions. The public description says exploitation may create stability risks, but it does not describe data theft, privilege escalation, or remote takeover. Treat it as a device reliability and support exposure until Huawei’s bulletin confirms more detail.
Executive priority
Handle as a targeted mobile fleet hygiene item, not a confirmed emergency. The business risk is mainly device stability and support burden, with urgency depending on how many Huawei devices remain on affected versions.
Technical view
The issue is described as improper validation of an array index in Huawei smartphones running EMUI 11.0.1, 11.0.0, 10.1.1 and Magic UI 4.0.0, 3.1.1. Public sources do not provide CVSS, CWE, vulnerable component, attack vector, prerequisites, or patch mechanics.
Likely exposure
Exposure is limited to Huawei devices on the listed EMUI or Magic UI versions. Organizations with managed mobile fleets, BYOD Huawei phones, or region-specific Huawei deployments should inventory versions before assuming impact.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not marked in KEV. No cited source provides exploit code, a proof of concept, attack prerequisites, or observed abuse.
Researcher notes
Evidence is sparse. The CVE record names the bug class and affected UI versions but omits component, CVSS, exploitability, and remediation detail. Avoid inferring attack surface beyond Huawei’s bulletin and CVE text.
Mitigation direction
- Inventory Huawei devices and record EMUI or Magic UI versions.
- Check Huawei’s May 2021 security bulletin for official update guidance.
- Apply vendor-supported security updates through approved device channels.
- Prioritize business-critical users and devices with stability complaints.
- Retire or isolate unsupported affected devices where updates are unavailable.
Validation and detection
- Confirm whether any fleet devices run the listed affected versions.
- Verify current security patch status against Huawei guidance.
- Review MDM inventory for unmanaged or stale Huawei devices.
- Track helpdesk reports for unexplained crashes or instability.
- Document update coverage and 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-2021-22374 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/2021/5/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.