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EmuiOperating system · Huawei

CVE-2025-54644

MEDIUM · 5.5 CVSS v3.1 Published 2025-08-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
57/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Out-of-bounds array access issue due to insufficient data verification in the kernel ambient light module. Impact: Successful exploitation of this vulnerability may affect service confidentiality.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A vulnerability exists in the kernel ambient light module where insufficient data validation allows an out-of-bounds array access. This could enable a local or adjacent attacker to read unintended memory contents, compromising confidentiality.

MitigationImplement proper bounds checking and input validation on all array indices in the ambient light module before accessing array elements.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
EmuiOperating system
Affected:= 13.0.0= 14.0.0
HarmonyosOperating system
Affected:= 3.0.0= 3.1.0= 4.0.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the installed Huawei OS version
    Go to Settings > About Phone > Version on the device and note the EMUI or HarmonyOS version number displayed
    Affected if The version shown is exactly 13.0.0 or 14.0.0 for EMUI, or exactly 3.0.0, 3.1.0, or 4.0.0 for HarmonyOS
  2. Confirm the ambient light sensor is present
    Check device sensor status via Settings > About Phone > Hardware Info > Sensors, or examine /sys/class/sensors/ directory if shell access is available, looking for an ambient light sensor entry
    Affected if An ambient light sensor (often labeled as 'als', 'light', or 'proximity') is listed and active on the device
  3. Verify the ambient light driver module is loaded
    If shell access is available, run 'lsmod' or check /proc/modules for the ambient light sensor driver module, or examine kernel module listings specific to the sensor subsystem
    Affected if A kernel module related to ambient light sensing is loaded and operational on the device

The device is affected if it runs EMUI 13.0.0/14.0.0 or HarmonyOS 3.0.0/3.1.0/4.0.0 AND includes an active ambient light sensor module that could trigger the vulnerable array access code path.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper bounds checking and input validation on all array indices in the ambient light module before accessing array elements.

Fix this in Emui Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-54644 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data