dbcve.org
AndroidOperating system · Google

CVE-2021-0358

MEDIUM · 6.7 CVSS v3.1 Published 2021-02-03
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
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
In netdiag, there is a possible command injection due to improper input validation. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android; Versions: Android-10, Android-11; Patch ID: ALPS05442022.

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 · high confidence

In netdiag on Android 10 and 11, improper input validation allows command injection enabling local privilege escalation from System execution privileges to elevated privileges without user interaction.

MitigationApply vendor patch ALPS05442022 for Android-10 and Android-11; restrict System-level access to netdiag and audit any custom Android builds for similar input validation issues.

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
AndroidOperating system
Affected:= 10.0= 11.0

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
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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. Identify the Android version
    Run 'getprop ro.build.version.release' or check Settings > About Phone > Android version
    Affected if The version is Android 10 or Android 11 (exact versions 10.0 or 11.0)
  2. Locate the netdiag binary
    Search for netdiag in common system binary directories such as /system/bin/, /sbin/, or /vendor/bin/ using 'find / -name netdiag 2>/dev/null'
    Affected if The netdiag binary exists on the device
  3. Check netdiag file permissions and ownership
    Run 'ls -la <path_to_netdiag>' to examine the binary's permissions, owner, and group
    Affected if The binary is owned by root or a privileged group and has executable permissions set
  4. Verify netdiag runs with elevated privileges
    Execute 'id' immediately after running netdiag (if safe to test in a controlled environment) or inspect any SELinux contexts associated with the binary
    Affected if netdiag executes with System-level or root privileges

A device is affected if it runs Android 10.0 or 11.0 AND has the netdiag binary present with executable permissions that allow it to run with System or elevated privileges.

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 vendor patch ALPS05442022 for Android-10 and Android-11; restrict System-level access to netdiag and audit any custom Android builds for similar input validation issues.

Fix this in Android Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA3.0 h
21.0 hours of engineering $3,680
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Scan for this in your stack

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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-2021-0358 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