dbcve.org
P30 FirmwareOperating system · Huawei

CVE-2021-22330

MEDIUM · 6.5 CVSS v3.1 Published 2021-04-28
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
70/100
Remediation priority · Elevated
No privileges 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
There is an out of bounds write vulnerability in Huawei Smartphone HUAWEI P30 versions 9.1.0.131(C00E130R1P21) when processing a message. An unauthenticated attacker can exploit this vulnerability by sending specific message to the target device. Due to insufficient validation of the input parameter, successful exploit can cause the process and the service to be abnormal.

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

An out-of-bounds write vulnerability exists in the message processing component of Huawei P30 smartphones (firmware 9.1.0.131). An unauthenticated attacker can trigger the flaw by sending a specially crafted message with insufficiently validated input parameters, causing the messaging process to become abnormal.

MitigationApply the vendor-provided security patch for Huawei P30 firmware version 9.1.0.131(C00E130R1P21) to address the input validation deficiency.

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
P30 FirmwareOperating system
Affected:= 9.1.0.131\(c00e130r1p21\)

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
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

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. Confirm device model is Huawei P30
    Check the device settings: Settings > About Phone > Model Number should display 'Huawei P30' or verify via *#*#2846579#*#* diagnostic menu
    Affected if Device model is not Huawei P30
  2. Check installed firmware version
    Navigate to Settings > About Phone > Version > Build Number. The affected version is 9.1.0.131(c00e130r1p21)
    Affected if Firmware version exactly matches 9.1.0.131(c00e130r1p21)
  3. Verify messaging application is active
    Confirm the default messaging app (Messages or Huawei Messaging) is installed and functional on the device
    Affected if Messaging application is present and operational

The device is affected only if it is a Huawei P30 running firmware version 9.1.0.131(c00e130r1p21) with an active messaging component.

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

Apply the vendor-provided security patch for Huawei P30 firmware version 9.1.0.131(C00E130R1P21) to address the input validation deficiency.

Fix this in P30 Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA4.0 h
28.0 hours of engineering $4,980
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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-2021-22330 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