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CVE Record

CVE-2021-22369: There is a Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability in Huawei Smartphone.

There is a Time-of-check Time-of-use (TOCTOU) Race Condition Vulnerability in Huawei Smartphone. Successful exploitation of these vulnerabilities may escalate the permission to that of the root user.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-22369 is a Huawei smartphone vulnerability where a timing flaw may let an attacker raise privileges to root. That means a compromised device could lose normal operating-system protections. The public sources identify affected EMUI and Magic UI versions, but do not provide severity scoring, exploit prerequisites, or active exploitation evidence.

Executive priority

Prioritize remediation for managed Huawei phones used by staff with access to corporate data. The business risk is device takeover through root privilege escalation, but urgency is moderated by incomplete public evidence on exploitation and attack prerequisites.

Technical view

The issue is described as a time-of-check to time-of-use race condition in Huawei Smartphone software. Successful exploitation may escalate permissions to root. Affected products listed are EMUI 11.0.0 and 10.1.1, plus Magic UI 4.0.0 and 3.1.1. No CWE, CVSS, or detailed attack vector is provided in the bundle.

Likely exposure

Exposure is limited to Huawei smartphones running the listed EMUI or Magic UI versions. Enterprise risk depends on whether such devices access corporate email, identity, messaging, or management systems. Sources do not identify server-side exposure or non-Huawei affected products.

Exploitation context

The provided bundle does not show CISA KEV listing or cited active exploitation. It also does not describe exploit availability, required access, user interaction, or privileges. Treat this as a serious endpoint privilege-escalation risk, with exploitation context incomplete.

Researcher notes

The source bundle gives only a high-level TOCTOU description and affected version families. It does not provide CVSS, CWE mapping, vulnerable component details, patch identifiers, or exploit conditions. Avoid assumptions about remote exploitability or active campaigns without additional vendor or threat-intelligence confirmation.

Mitigation direction

  • Check Huawei's May 2021 security bulletin for vendor remediation guidance.
  • Update affected Huawei devices to a vendor-supported fixed build where available.
  • Inventory corporate-managed Huawei devices and record EMUI or Magic UI versions.
  • Restrict sensitive corporate access from devices that cannot be updated.
  • Apply mobile device management controls for compliance and minimum OS version enforcement.

Validation and detection

  • Identify devices running EMUI 11.0.0, EMUI 10.1.1, Magic UI 4.0.0, or Magic UI 3.1.1.
  • Confirm each device's current security patch level against Huawei bulletin guidance.
  • Review MDM inventory for unmanaged Huawei devices accessing corporate services.
  • Check whether unsupported or unpatched devices retain privileged application access.
  • Document exceptions where update status cannot be verified.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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CVE-2021-22369 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aEMUI;Magic UIEMUI 11.0.0,EMUI 10.1.1, Magic UI 4.0.0,Magic UI 3.1.1Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.