CVE-2026-21010
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 · uneditedImproper input validation in Retail Mode prior to SMR Apr-2026 Release 1 allows local attackers to trigger privileged functions.
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 confidenceImproper input validation in Samsung's Retail Mode (a demo mode for retail display devices) prior to the SMR Apr-2026 Release 1 enables local attackers to execute privileged functions. This is a local privilege escalation vulnerability where insufficient input sanitization allows unauthorized access to elevated operations.
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= 14.0= 15.0= 16.0CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
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Check Android OS version on the Samsung deviceNavigate to Settings > About Phone > Android version and record the version number displayedAffected if The device runs Android version 14.0, 15.0, or 16.0 (matches one of the affected versions)
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Confirm device is a Samsung productNavigate to Settings > About Phone and verify the manufacturer or model indicates a Samsung deviceAffected if The device is manufactured by Samsung and matches the affected product line
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Identify if Retail Mode is present or enabledCheck Settings > Retail Mode, or look in Settings > Connections for Retail Mode, or search for 'Retail Mode' in the device settings search function; also check for a Retail Mode quick settings tileAffected if Retail Mode is available as a feature or is currently enabled on the device
The device is affected if it is a Samsung Android device running version 14.0, 15.0, or 16.0 with the Retail Mode feature present or enabled, as the vulnerability requires both the vulnerable OS version and the Retail Mode component to be exploitable
Generated from the published advisory. Verify against your own configuration.
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.
dbcve · scopedApply the SMR Apr-2026 Release 1 or later Samsung firmware update to affected devices running Retail Mode.
SMR Apr-2026 Release 1
- Navigate to Settings on the Samsung device
- Go to Software update
- Tap Download and install to check for the SMR Apr-2026 Release 1 update
- If available, install the update to patch the Retail Mode vulnerability
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-21010 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-21010 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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