Security readout for executives and security teams
Plain-English summary
CVE-2021-46814 is a Huawei video framework memory-safety flaw affecting listed HarmonyOS, EMUI, and Magic UI versions. The public description says successful exploitation may affect system availability, so the clearest business concern is device instability or denial of service, not confirmed data theft or code execution.
Executive priority
Medium operational priority, but evidence-limited. The vulnerability affects device availability on specific Huawei mobile platforms, with no confirmed active exploitation in the supplied sources. Patch or remove affected devices from sensitive workflows, especially where device downtime disrupts operations.
Technical view
The issue is described as an out-of-bounds memory read/write vulnerability in the video framework. Public sources do not provide CVSS, CWE, attack vector, prerequisites, fixed build numbers, or exploit details. Treat affected Huawei mobile OS versions as potentially exposed until vendor bulletin guidance confirms remediation.
Likely exposure
Exposure is limited by the provided sources to Huawei HarmonyOS 2.0, EMUI 10.1.0, 10.1.1, 11.0.0, 12.0.0, and Magic UI 3.1.0, 3.1.1, 4.0. Asset inventories should focus on Huawei devices running those versions.
Exploitation context
The source bundle does not show CISA KEV listing, active exploitation, public exploit availability, or exploitation prerequisites. The stated impact is system availability. Any stronger claim about exploitability, remote reachability, or confidentiality impact would exceed the available evidence.
Researcher notes
Key missing data includes CVSS vector, CWE, vulnerable component internals, fixed versions, attack surface, and exploit prerequisites. Avoid assuming remote exploitation or code execution. Validation should be version-based and vendor-bulletin-driven unless additional Huawei advisories provide deeper technical detail.
Mitigation direction
- Check Huawei's June 2022 security bulletin for product-specific update guidance.
- Apply official Huawei firmware or OS security updates where available.
- Prioritize affected devices used by executives, field teams, or critical operations.
- Replace or isolate unsupported affected devices if no vendor update is available.
Validation and detection
- Inventory Huawei devices and record HarmonyOS, EMUI, or Magic UI versions.
- Compare installed versions against the affected versions listed in the CVE source bundle.
- Confirm whether Huawei bulletin guidance has been applied for each affected device.
- Monitor device stability incidents that may indicate video framework-triggered availability problems.
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-2021-46814 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/2022/6/CVE reference · x_refsource_MISC
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202206-0000001270350482CVE 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.