CVE-2025-54626

Local function disruption via dangling cjwindow pointer

Published Aug 6, 2025 · Updated Aug 6, 2025

Use-after-free in Huawei HarmonyOS 5.1.0 cjwindow allows local users to disrupt window-function stability through local access. The cjwindow module retains or dereferences a pointer after its allocation has been freed, but Huawei has not disclosed the triggering operation or input. Exploitation requires low-privilege local access and can impair function stability; no confidentiality impact or remote reachability is reported.

CVSS severity4.4
Medium
EPSS probability0.08%
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 Huawei HarmonyOS 5.1.0 cjwindow allows local users to disrupt window-function stability through local access. The cjwindow module retains or dereferences a pointer after its allocation has been freed, but Huawei has not disclosed the triggering operation or input. Exploitation requires low-privilege local access and can impair function stability; no confidentiality impact or remote reachability is reported.

The record

CVE
CVE-2025-54626
Published
Aug 6, 2025
Updated
Aug 6, 2025
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.1.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

MindSpore · HarmonyOSversion=5.1.0

Published CVSS scores

4.4HuaweiCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

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.

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No observations available

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

Weakness, pattern, technique

CWE-416Use After Free
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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