CVE-2025-21045
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 · uneditedInsecure storage of sensitive information in Galaxy Watch prior to SMR Oct-2025 Release 1 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 confidenceGalaxy Watch devices prior to SMR Oct-2025 Release 1 store sensitive information using insecure storage mechanisms, allowing a local attacker with physical access to the device to read sensitive data that should be protected.
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= 5.0CVSS 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
- 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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Confirm device is a Galaxy WatchCheck the device model by going to Settings > About Watch on the Galaxy Watch, or check the device packaging/documentation. Verify the model number corresponds to a Samsung Galaxy Watch device.Affected if Device is a Samsung Galaxy Watch running Wear OS
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Check the Wear OS versionOn the Galaxy Watch, navigate to Settings > About Watch > Software Information > Software Version. This displays the current Wear OS version.Affected if Wear OS version is exactly 5.0
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Check the SMR firmware versionOn the Galaxy Watch, go to Settings > About Watch > Software Information. Look for the SMR (Samsung Maintenance Release) version number. It typically appears as 'SMR xxx-xxxx' or similar.Affected if SMR version is earlier than Oct-2025 Release 1 (for example, SMR Sep-2025 or earlier)
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Verify if sensitive data is stored on the deviceReview installed apps that handle sensitive information such as health data, payment apps, password managers, or banking applications. Check if any contain personal or financial data.Affected if Sensitive or personal applications with private data are installed and the device meets the affected version criteria
The device is affected if it is a Samsung Galaxy Watch running Wear OS version 5.0 with an SMR firmware version earlier than Oct-2025 Release 1, and it stores sensitive information that could be accessed via physical access.
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 · scopedUpdate Galaxy Watch devices to SMR Oct-2025 Release 1 or later via Samsung's firmware update process to remediate the insecure storage vulnerability.
SMR Oct-2025 Release 1
- Open the Galaxy Wearable app on the connected smartphone
- Navigate to Watch Settings > Software Update
- Ensure your Galaxy Watch is connected and charged
- Tap Download and Install to check for the latest SMR update
- After installation, verify the update was successful and the device is on SMR Oct-2025 Release 1 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 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-2025-21045 — 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-2025-21045 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