CVE-2022-21748
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, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS06511030; Issue ID: ALPS06511030.
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 information disclosure vulnerability in the Android telephony subsystem caused by a missing permission check. An attacker with user-level execution privileges could exploit this to access sensitive telephony information without proper authorization, but user interaction is required to trigger the exploit.
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= 12.0CVSS 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 Android OS versionOpen Settings > About Phone or run 'adb shell getprop ro.build.version.release'Affected if Version is exactly 11.0 or 12.0
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Identify device chipset manufacturerRun 'adb shell getprop ro.hardware' or 'adb shell getprop ro.chipname' to check for MediaTek componentsAffected if Device uses MediaTek chipset (common identifiers include 'mt6', 'mt7', 'mt8', 'mediatek')
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Verify telephony permission enforcementExamine if the telephony service properly validates permissions before returning sensitive information. This typically requires code-level inspection or security audit of the telephony provider.Affected if Telephony service allows access to sensitive data (call logs, IMEI, SIM info) without RUN_PHONE_PERMISSION or similar authorization checks
A user is affected if their Android device runs version 11.0 or 12.0, uses a MediaTek chipset, and the telephony service lacks proper permission validation for sensitive data access.
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 patch (ALPS06511030) for MediaTek-based Android devices to implement proper permission validation in the telephony service. Until the patch is deployed, limit device access to untrusted applications and monitor for unusual telephony data access attempts.
- Consultation6.0 h
- Implementation8.0 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-2022-21748 — 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-2022-21748 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