CVE-2021-25427
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 · uneditedSQL injection vulnerability in Bluetooth prior to SMR July-2021 Release 1 allows unauthorized access to paired device 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 confidenceSQL injection vulnerability in Bluetooth stack prior to SMR July-2021 Release 1 allows attackers to inject malicious SQL queries through Bluetooth protocol handlers, enabling unauthorized access to stored paired device information including device names, addresses, and possibly authentication credentials.
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= 8.1= 9.0= 10.0= 11.0CVSS 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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Check Android OS versionGo to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if Android version is 8.1, 9.0, 10.0, or 11.0 (the exact version number matches one of these)
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Identify Bluetooth firmware versionCheck device firmware/build information for 'SMR' (Samsung Modified Release) version - typically found in Settings > About Phone > Software info, or via 'getprop' commands for bluetooth firmware propertiesAffected if Bluetooth firmware/software is dated before SMR July-2021 Release 1 or the SMR version is not explicitly July-2021 Release 1 or later
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Verify device uses vulnerable Bluetooth stackConfirm the device runs a Samsung Bluetooth stack (common on Samsung Galaxy devices) by checking build properties or Bluetooth stack vendor informationAffected if Device uses a Samsung Bluetooth implementation on Android 8.1-11.0 and has not received the SMR July-2021 update
A user is affected if their Android device runs version 8.1, 9.0, 10.0, or 11.0 and the Bluetooth firmware has not been updated to SMR July-2021 Release 1 or later.
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.
From vendor dataUpdate Bluetooth firmware/software to SMR July-2021 Release 1 or later. If immediate patching is not possible, monitor Bluetooth traffic for anomalous queries and restrict Bluetooth pairing permissions.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-25427 — 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-2021-25427 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