CVE-2023-30929
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 possible missing permission check. This could lead to local escalation of privilege with no additional execution privileges.
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 confidenceThis is a local privilege escalation vulnerability in Android's telephony service caused by a missing permission check. An attacker with local access could exploit this to gain elevated privileges without needing additional execution privileges. The vulnerability allows a malicious local application to potentially access telephony functions it shouldn't have permission to use.
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
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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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Identify Android versionGo to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if The version displayed is 10.0, 11.0, 12.0, or 13.0
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Verify telephony service is runningRun 'dumpsys telephony.registry' via ADB shell to confirm the telephony service is activeAffected if The telephony service is running on a vulnerable Android version (10.0-13.0)
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Review telephony permissions granted to appsRun 'dumpsys package <package_name> | grep -i telephony' via ADB for installed apps, or use Settings > Apps > Permissions to manually inspect telephony-related permissionsAffected if Any app without proper justification holds READ_PHONE_STATE, READ_PHONE_NUMBERS, or CALL_PHONE permissions on a vulnerable version
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Check for permission bypass indicators in system logsRun 'logcat -d | grep -i "telephony" | grep -i "permission"' via ADB shell to look for denied permission attempts or security exceptions related to telephonyAffected if Logs show telephony permission checks being bypassed or denied on a vulnerable Android version
You are affected if your Android device runs version 10.0, 11.0, 12.0, or 13.0 and the telephony service is active, as the missing permission check in the telephony service could allow a malicious local app to gain elevated privileges.
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 code to ensure all sensitive operations verify caller permissions before execution.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-30929 — 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-2023-30929 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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