CVE-2021-25360
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 · uneditedAn improper input validation vulnerability in libswmfextractor library prior to SMR APR-2021 Release 1 allows attackers to execute arbitrary code on mediaextractor process.
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 confidenceAn improper input validation vulnerability exists in the libswmfextractor library before the SMR APR-2021 Release. Attackers can exploit this flaw by providing specially crafted input to the mediaextractor process, potentially achieving arbitrary code execution with the privileges of that process.
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= 10.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 versionGo to Settings > About Phone > Android version or run 'getprop ro.build.version.release' via ADB shellAffected if Version is Android 10.0 (the only version explicitly listed as affected)
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Locate libswmfextractor librarySearch for libswmfextractor on the device using 'find / -name libswmfextractor* 2>/dev/null' via ADB shell or examine /system/lib or /vendor/lib directoriesAffected if The library file exists on the device - this indicates the vulnerable component is present
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Determine library versionCheck the library file metadata using 'ls -la' or examine any version strings within the binary via 'strings' command if availableAffected if Unable to determine version or version is prior to SMR APR-2021 Release 1
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Verify mediaextractor process exposureReview app permissions and inter-process communication (IPC) configurations that allow external apps to send input to the mediaextractor serviceAffected if The mediaextractor process accepts input from untrusted or third-party applications
You are affected if your device runs Android 10.0, contains the libswmfextractor library, and the mediaextractor process can receive crafted input from untrusted sources.
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 · scopedUpgrade the libswmfextractor library to SMR APR-2021 Release 1 or later. If immediate patching is not possible, restrict exposure of the mediaextractor process to untrusted inputs and monitor for exploitation attempts.
SMR APR-2021 Release 1 (April 2021 Security Patch)
- 1. Check for system software updates on the Samsung device
- 2. Navigate to Settings > About Phone > Software Update
- 3. Tap 'Download and Install' if an update is available
- 4. Ensure the device updates to the SMR APR-2021 Release 1 or later which contains the fix for the libswmfextractor vulnerability
- 5. After updating, verify the device is running the patched version of Android 10.0 with the April 2021 security patch level
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 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 $7,616.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-25360 — 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-2021-25360 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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