CVE-2023-33888
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 telephony service, there is a missing permission check. This could lead to local information disclosure with no additional execution privileges needed.
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 confidenceA missing permission check in the Android telephony service allows local applications to access sensitive telephony information (such as phone numbers, call logs, or IMEI) without proper Android permissions. An app with no special privileges can exploit this to obtain sensitive user 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= 10.0= 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
- 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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Check your Android versionGo to Settings > About Phone > Android version. Alternatively, run 'getprop ro.build.version.release' via ADB or check 'android.os.Build.VERSION.RELEASE' in an app.Affected if The version listed is exactly 10.0, 11.0, 12.0, or 13.0
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Verify the security patch levelGo to Settings > About Phone > Security Patch Level. On newer versions, check Settings > Security > Security update. Or run 'getprop ro.build.version.security_patch' via ADB.Affected if The security patch level is earlier than the vendor release date for the CVE-2023-33888 fix (typically May 2023 or earlier for affected versions)
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Test telephony permission enforcement (if you are a developer)Create a minimal non-privileged test application that queries TelephonyManager without declaring READ_PHONE_STATE or READ_CALL_LOG permissions. Attempt to retrieve getLine1Number(), getDeviceId(), or getCallHistory().Affected if The unprivileged app successfully retrieves any telephony data (phone number, IMEI, call log entries) without the app crashing or throwing a SecurityException
You are affected if your Android device runs version 10.0, 11.0, 12.0, or 13.0 AND has a security patch level predating the fix AND your unprivileged apps can access telephony data without runtime permissions.
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 the vendor-supplied patch that adds proper permission validation in the telephony service to enforce Android permission checks before returning sensitive information to requesting applications.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-33888 — 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-2023-33888 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