CVE-2022-22252Network attack vector

System instability via DFX use-after-free

Published May 13, 2022 · Updated Aug 3, 2024

Use-after-free in the DFX module in Huawei HarmonyOS, EMUI, and Magic UI allows attackers to disrupt system stability via unspecified vectors. Huawei has not published the freed DFX object, triggering input, or code path that accesses it after its lifetime ends. The exploitation precondition and specific failure mode are undisclosed; public sources do not state whether affected devices hang, crash, or reboot.

CVSS severity7.5
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the DFX module in Huawei HarmonyOS, EMUI, and Magic UI allows attackers to disrupt system stability via unspecified vectors. Huawei has not published the freed DFX object, triggering input, or code path that accesses it after its lifetime ends. The exploitation precondition and specific failure mode are undisclosed; public sources do not state whether affected devices hang, crash, or reboot.

The record

CVE
CVE-2022-22252
Published
May 13, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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