CVE-2026-21008
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 · uneditedExposure of sensitive information in S Share prior to SMR Apr-2026 Release 1 allows adjacent attacker to access sensitive information.
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 confidenceThis is a sensitive information exposure vulnerability in Samsung's S Share application. An adjacent attacker (someone in physical proximity to the target device) can access sensitive information due to improper access controls or data handling in the app. The vulnerability affects versions prior to the SMR April-2026 Release 1 security patch.
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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:A/AC:L/PR:N/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 checksWork through these to decide whether this CVE applies to you.
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Verify S Share application is installedGo to Settings > Apps > S Share, or use adb shell pm list packages | grep sshare to check if the app exists on the deviceAffected if S Share app is present on the device
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Check S Share app versionIn Settings > Apps > S Share > App info, note the version number displayed under the app name, or use adb shell dumpsys package com.samsung.android.sshare | grep versionNameAffected if Version is earlier than the SMR April-2026 Release 1 update version
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Verify Android OS versionGo to Settings > About Phone > Android version, or use adb shell getprop ro.build.version.releaseAffected if Android version is 14.0, 15.0, or 16.0
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Check security patch levelGo to Settings > About Phone > Security patch level, or use adb shell getprop ro.build.version.security_patchAffected if Security patch level is earlier than April 2026 (SMR Apr-2026 Release 1)
The device is affected if S Share is installed, the device runs Android 14-16, and the security patch level is earlier than the SMR April-2026 Release 1 update.
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 security update to Samsung devices running affected versions of S Share to remediate this vulnerability.
SMR Apr-2026 Release 1 (or later security patch level)
- Open Settings on the Samsung device
- Navigate to Software update (or Security and privacy > Software update)
- Tap Download and install to check for available updates
- Locate and install the SMR Apr-2026 Release 1 security update (or later)
- Verify the security patch level has been updated in Settings > About phone > Software information
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,496.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-21008 — 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-2026-21008 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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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.
- 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