CVE-2026-21036
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 authorization in Samsung Internet prior to version 30.0.0.39 allows local attackers 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 · high confidenceThis is an improper authorization vulnerability in the Samsung Internet browser that allows local attackers to bypass security controls and access sensitive information. The vulnerability stems from insufficient authorization checks within the browser, enabling a malicious local user to retrieve data they should not have permission to view. The issue affects Samsung Internet versions prior to 30.0.0.39.
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< 30.0.0.39CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/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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Locate Samsung Internet browser installationOpen Android Settings > Apps and search for 'Samsung Internet' or 'Samsung Browser' in the installed applications listAffected if Samsung Internet browser is installed on the device
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Identify installed Samsung Internet versionTap on Samsung Internet in the apps list, then view the 'App info' or 'Version' field displayed under the app nameAffected if Version number shown is below 30.0.0.39 (for example, 30.0.0.38, 29.0.x.x, or earlier)
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Confirm version within Samsung Internet appOpen Samsung Internet browser, tap the three-line menu icon, scroll to 'Settings', tap 'About Samsung Internet', and verify the version number displayedAffected if The displayed version is less than 30.0.0.39
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Verify if autoupdate changed versionCheck if the Play Store has automatically updated Samsung Internet by opening Play Store > Profile > Manage apps > Samsung InternetAffected if Version remains below 30.0.0.39 after checking all above methods
A user is affected if the installed Samsung Internet browser version is any release prior to 30.0.0.39.
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 · scoped30.0.0.39
Update Samsung Internet browser to version 30.0.0.39 or later to obtain the patch for this vulnerability.
30.0.0.39
- Open the Samsung Internet app on your Android device
- Tap the three-line menu icon (hamburger menu) in the bottom right corner
- Navigate to Settings by scrolling down and selecting 'Settings'
- Tap 'Samsung Internet' under the 'About' section
- Check the version number - if it is below 30.0.0.39, an update is required
- Open Google Play Store and search for 'Samsung Internet'
- Tap 'Update' to install the latest version containing the security fix
- Alternatively, enable auto-updates in Play Store settings to automatically receive future security patches
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-21036 — 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-2026-21036 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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