CVE-2023-42566
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 · uneditedOut-of-bound write vulnerability in libsavsvc prior to SMR Dec-2023 Release 1 allows local attackers to execute arbitrary code.
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 confidenceOut-of-bounds write vulnerability in libsavsvc (Samsung antivirus service library) allows local attackers to execute arbitrary code due to improper bounds checking when writing to memory. The flaw exists in versions prior to SMR Dec-2023 Release 1.
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, < 14.0= 14.0CVSS 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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Check Android version on the Samsung deviceGo to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if The Android version is 11.0, 12.x, 13.x, or exactly 14.0 (versions >= 11.0 and < 14.0, or = 14.0)
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Confirm Samsung device modelCheck the device model in Settings > About Phone > Model number, or run 'getprop ro.product.model' via ADB shellAffected if The device is a Samsung Galaxy device (libsavsvc is Samsung-specific)
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Locate libsavsvc library on the deviceSearch for the library file using 'find / -name libsavsvc* 2>/dev/null' via ADB shell, or check common paths like /system/lib64/libsavsvc.soAffected if The library file exists on the device (vulnerable code path is present)
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Check libsavsvc library versionRun 'dumpsys package com.samsung.android.lool' or check the library file metadata via 'ls -la <path>/libsavsvc.so' to determine versionAffected if The library version is present and predates the SMR Dec-2023 Release 1 patch (version cannot be determined or is older than December 2023 release)
A Samsung Galaxy device running Android 11.0 through 14.0 with the libsavsvc library present is likely affected if the library version predates the December 2023 security update.
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.
dbcve · scoped14.0
Apply the SMR Dec-2023 Release 1 security update or later to patch libsavsvc. Identify and update all affected Samsung devices or software deployments running the vulnerable library version.
SMR Dec-2023 Release 1 or later
- Check your Samsung device model and current Android/SMR version in Settings > About Phone
- Navigate to Settings > Software Update and tap 'Download and Install' to check for available updates
- Update to Samsung Maintenance Release (SMR) Dec-2023 Release 1 or later which contains the patched libsavsvc library
- Alternatively, ensure automatic updates are enabled in Settings > Software Update > Auto download over Wi-Fi
- After updating, verify the SMR version in About Phone to confirm the patch is applied
Generated from the published advisory — verify against the referenced sources before acting.
- 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-2023-42566 — 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-2023-42566 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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