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AndroidOperating system · Google

CVE-2021-25334

MEDIUM · 5.5 CVSS v3.1 Published 2021-03-04
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
58/100
Remediation priority · Elevated
No privileges

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
Improper input check in wallpaper service in Samsung mobile devices prior to SMR Feb-2021 Release 1 allows untrusted application to cause permanent denial of service.

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

Improper input validation in the wallpaper service on Samsung mobile devices allows a malicious untrusted application to trigger a permanent denial of service condition, likely causing the device to become unusable until a factory reset or firmware reflash is performed.

MitigationApply Samsung's SMR Feb-2021 Release 1 or later security patch to affected devices; for enterprise fleets, verify all devices have received the update and consider MDM policies restricting app permissions to untrusted sources.

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:= 9.0= 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
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 is a Samsung mobile device
    Go to Settings > About Phone and check the Model number or Device name field; Samsung models typically start with SM- or model numbers like SM-G9xx, SM-N9xx, etc.
    Affected if The device is NOT a Samsung mobile device - this vulnerability specifically affects Samsung devices
  2. Check the Android OS version
    Go to Settings > About Phone > Android version; record the displayed version number
    Affected if The version is NOT 9.0, 10.0, or 11.0 - the CVE only affects these three specific Android versions
  3. Verify the security patch level
    Go to Settings > About Phone > Security patch level; record the date shown (format is typically Month Year, e.g., 'February 1, 2021')
    Affected if The security patch level is BEFORE February 2021, or the field shows unknown/blank - the fix was in Samsung's SMR Feb-2021 Release 1 or later

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 Samsung's SMR Feb-2021 Release 1 or later security patch to affected devices; for enterprise fleets, verify all devices have received the update and consider MDM policies restricting app permissions to untrusted sources.

Fix this in Android Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2021-25334 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