Security readout for executives and security teams
Plain-English summary
CVE-2021-22424 is a HarmonyOS 2.0 kernel memory leakage issue. The public CVE says a local attacker may exploit it to cause kernel denial of service, meaning device instability or outage. Public details are limited, so urgency depends on whether the organization still runs affected HarmonyOS 2.0 devices.
Executive priority
Prioritize verification over emergency response. This is a kernel denial-of-service issue with local attack requirements and limited public detail, but affected mobile or embedded fleets may still face operational disruption.
Technical view
The record identifies a kernel memory leakage vulnerability in an unspecified HarmonyOS component affecting HarmonyOS 2.0. The only stated impact is local attacker-triggered kernel denial of service. No CVSS vector, CWE, affected builds beyond 2.0, exploit details, or confirmed fixed version are included in the supplied sources.
Likely exposure
Exposure appears limited to Huawei devices running HarmonyOS 2.0. The source bundle does not identify affected device models, build ranges, enterprise deployment paths, or remote attack surface.
Exploitation context
The CVE describes local attack conditions only. CISA KEV status is false in the bundle, and no cited source states active exploitation. Treat exploitation evidence as unconfirmed.
Researcher notes
Key gaps are the unspecified component, absent CVSS, no CWE, no model list, and no explicit fixed build in the supplied bundle. Avoid assuming broader Huawei product impact without vendor confirmation.
Mitigation direction
- Inventory Huawei/HarmonyOS assets and identify devices running HarmonyOS 2.0.
- Review Huawei's referenced June 2021 security update for applicable fixed builds.
- Apply vendor-recommended HarmonyOS updates where available and operationally approved.
- Restrict untrusted local access to affected devices until vendor guidance is confirmed.
Validation and detection
- Confirm device OS version and build through MDM or asset inventory records.
- Compare installed builds against Huawei's referenced security update guidance.
- Check incident records for unexplained kernel crashes or repeated device reboots.
- Document any remaining HarmonyOS 2.0 devices and ownership for remediation tracking.
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-2021-22424 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/cn/docs/security/update/oem_security_update_phone_202106-0000001165452077CVE 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.