CVE-2025-21078
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 · uneditedUse of insufficiently random value of secretKey in Smart Switch prior to version 3.7.68.6 allows adjacent attackers to access backup data from applications.
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 Smart Switch prior to version 3.7.68.6 uses an insufficiently random secretKey for protecting backup data. The weak randomness in key generation allows adjacent attackers (within physical or network proximity) to predict or brute-force the key and access application backup data.
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< 3.7.68.6CVSS 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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Check Samsung Smart Switch installed versionLocate and verify the installed version of Samsung Smart Switch on the systemAffected if The installed version is present and below 3.7.68.6
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Confirm backup functionality is in useDetermine whether backup data protected by the secretKey feature exists in the environmentAffected if Backup data that relies on the secretKey for protection is present and the application version is below 3.7.68.6
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Assess network proximity exposureEvaluate whether the device is in an environment where adjacent attackers could potentially reach itAffected if The device with vulnerable backup data is accessible to nearby attackers within physical or network proximity
A user is affected if Samsung Smart Switch version is below 3.7.68.6 and backup data protected by the insufficiently random secretKey is present in the environment.
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 · scoped3.7.68.6
Update Smart Switch to version 3.7.68.6 or later, which implements proper cryptographic random number generation for the secretKey.
3.7.68.6
- 1. Check the current version of Smart Switch installed on your device via Settings > Apps > Smart Switch
- 2. Update Smart Switch to version 3.7.68.6 or later through the Samsung Galaxy Store, Samsung Galaxy Apps store, or from Samsung's official support website
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-21078 — 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-2025-21078 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
- No spam, self-promotion, credentials, or personal data