CVE-2021-25465
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 · uneditedAn improper scheme check vulnerability in Samsung Themes prior to version 5.2.01 allows attackers to perform Man-in-the-middle attack.
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 confidenceSamsung Themes versions prior to 5.2.01 contain an improper scheme check vulnerability that allows attackers to perform Man-in-the-Middle attacks. The app fails to properly validate URL schemes before processing network requests, enabling an attacker to intercept or manipulate communications between the app and its backend servers.
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< 5.2.01CVSS 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
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:H/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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Verify Samsung Themes is installedOpen device Settings > Apps > Apps menu, then search for 'Samsung Themes' or locate it in the app listAffected if Samsung Themes app is present on the device
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Check installed app versionTap on Samsung Themes in the apps list, then access App info or tap the three-dot menu and select 'App info' or 'Details' to view the version number (typically shown as something like 5.x.x)Affected if Version number displayed is lower than 5.2.01
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Confirm version in app settingsOpen Samsung Themes app, go to Settings (usually three-line or three-dot menu) > About/About Themes to verify the exact version stringAffected if Version shown is prior to 5.2.01 (for example, 5.1.00, 5.0.5, etc.)
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Check for theme network activityAttempt to download or apply a theme from the Samsung Themes store to trigger network communicationAffected if App processes network requests on untrusted networks (WiFi without encryption or public networks)
User is affected if Samsung Themes version installed is lower than 5.2.01 and the app processes network requests.
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 · scoped5.2.01
Update Samsung Themes to version 5.2.01 or later. Until then, avoid using the app on untrusted networks.
5.2.01
- Open the Galaxy Store or Google Play Store on your Samsung device
- Search for Samsung Themes
- Update Samsung Themes to version 5.2.01 or later
- Verify the update was successful by checking the app version in Settings > Apps > Samsung Themes
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-25465 — 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-2021-25465 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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