CVE-2022-26527
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 · uneditedRealtek Linux/Android Bluetooth Mesh SDK has a buffer overflow vulnerability due to insufficient validation for the size of segmented packets’ reference parameter. An unauthenticated attacker in the adjacent network can exploit this vulnerability to cause buffer overflow and disrupt service.
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 confidenceRealtek Linux/Android Bluetooth Mesh SDK contains a buffer overflow vulnerability stemming from insufficient validation of the size parameter in segmented packets. An unauthenticated attacker within Bluetooth range can send specially crafted packets with malformed reference parameters to overflow a buffer, causing denial of service.
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<= 4.17-4.17-20220127CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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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Identify presence of Realtek Bluetooth Mesh SDKSearch for Realtek Bluetooth Mesh SDK libraries, headers, or documentation files on the system. Look for directories or files containing 'realtek', 'bt_mesh', or 'bluetooth mesh' in their names.Affected if The Realtek Bluetooth Mesh SDK files are found on the system
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Check installed SDK versionLocate version information within the SDK installation directory. Check README, version.h, or any version metadata files included with the SDK. Compare the found version against the affected range: all versions <= 4.17-4.17-20220127.Affected if The installed version is 4.17-4.17-20220127 or earlier
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Verify Bluetooth Mesh feature is enabledInspect the device configuration or runtime settings to determine if Bluetooth Mesh functionality is actively enabled. Check for Mesh profile configuration in Bluetooth settings or application initialization code.Affected if Bluetooth Mesh feature is enabled and the device is accepting Bluetooth connections
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Confirm device accepts Bluetooth connectionsCheck if the device Bluetooth interface is in discoverable or connectable mode, or if there are active Bluetooth services listening for incoming connections.Affected if The device Bluetooth is discoverable or accepting connections from untrusted devices
The environment is affected if the Realtek Bluetooth Mesh SDK version is 4.17-4.17-20220127 or earlier AND Bluetooth Mesh functionality is enabled and accessible to untrusted devices.
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 dataApply vendor patches when available; until then, restrict Bluetooth accessibility to trusted devices and monitor for unusual Bluetooth traffic patterns.
- Consultation4.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-26527 — 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-2022-26527 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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