CVE-2023-20723
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 · uneditedIn Bluetooth, there is a possible out of bounds read due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07843845; Issue ID: ALPS07843845.
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 confidenceIn the Bluetooth component, an out-of-bounds read vulnerability exists due to a missing bounds check. A local attacker with System execution privileges could exploit this to read memory beyond allocated buffers, potentially achieving privilege escalation. No user interaction is required for exploitation.
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= 11.0= 12.0= 13.0CVSS 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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:H/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 Android versionGo to Settings > About Phone > Android version or run 'getprop ro.build.version.release' via ADBAffected if The installed Android version is 11.0, 12.0, or 13.0 exactly
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Confirm Bluetooth component is presentCheck if Bluetooth is available on the device via Settings > Bluetooth or run 'service list | grep bluetooth' via ADBAffected if Bluetooth is enabled and the Bluetooth service is running on an affected Android version
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Check for System or root access exposureVerify if the device allows third-party apps System-level privileges or if root access is present via 'su' command or root checker appsAffected if System or root privileges are accessible to applications on an affected Android version, making exploitation feasible
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Review Bluetooth permissions for privileged processesExamine running processes with SYSTEM Bluetooth permissions via 'dumpsys bluetooth_manager' or inspect app permissions for Bluetooth accessAffected if Any process holds System-level Bluetooth permissions on an affected version
The environment is affected if running Android 11.0, 12.0, or 13.0 with Bluetooth enabled and System-level access is available to any application or process.
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 patch ALPS07843845. Since System privileges are required for exploitation, restrict root/System-level access and monitor for suspicious Bluetooth activity from privileged processes.
- Consultation3.0 h
- Implementation2.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,840.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-20723 — 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-2023-20723 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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