CVE-2023-48405
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 · uneditedthere is a possible way for the secure world to write to NS memory due to a logic error in the code. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
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 logic error in TrustZone implementation allows the secure world to write to Non-Secure (NS) memory, which should be architecturally prohibited. This improper memory isolation could enable a local attacker with System privileges to escalate privileges by corrupting NS memory from the secure world.
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 dataall versionsCVSS 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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Identify the Android device and vendorDetermine the device model and mobile carrier/OEM by checking system settings or running 'getprop ro.product manufacturer' and 'getprop ro.product model'Affected if The device runs Google Android (all versions are affected)
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Check the Android security patch levelRun 'getprop ro.build.version.security_patch' to retrieve the installed security patch dateAffected if The patch level is earlier than the vendor's published fix date for CVE-2023-48405
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Check the TrustZone firmware versionRun 'getprop ro.vendor.trustzone.version' or consult vendor documentation for the installed TZ firmware versionAffected if The TrustZone firmware version is older than the vendor's patched version for this CVE
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Verify secure-to-NS memory isolationUse vendor-provided diagnostic tools or consult the vendor's security advisory to confirm whether secure world to Non-Secure memory writes are properly restrictedAffected if Secure-to-NS memory transfers remain unrestricted (the vulnerability is still present)
A user is affected if their Android device has a security patch level or TrustZone firmware version older than the vendor's published fix for CVE-2023-48405, allowing improper secure world writes to Non-Secure memory.
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-supplied firmware/microcode updates addressing the TrustZone logic error. Verify that secure-to-NS memory transfers are properly restricted after patching.
- Consultation8.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $12,352.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-48405 — 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-2023-48405 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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