CVE-2025-20961
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 · uneditedImproper handling of insufficient permission or privileges in sepunion service prior to SMR May-2025 Release 1 allows local privileged attackers to access files with system privilege.
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 confidenceThe sepunion service in Samsung mobile devices prior to SMR May-2025 Release 1 improperly handles permission checks, allowing a local attacker with elevated privileges to access files that should require system-level privileges. This represents a local privilege escalation vulnerability where the service fails to properly validate authorization before granting file access.
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= 13.0= 14.0= 15.0CVSS 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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Identify Android versionGo to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shellAffected if The version is 13.0, 14.0, or 15.0 specifically - other versions are not affected
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Verify Samsung deviceCheck that the device is a Samsung product by running 'getprop ro.product.brand' via ADB shellAffected if Only Samsung-branded devices run the vulnerable sepunion service; non-Samsung devices are not affected
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Confirm sepunion service presenceCheck if the sepunion service exists on the device by listing /system/bin or /vendor/bin for 'sepunion', or run 'getprop | grep sepunion' via ADB shellAffected if If the sepunion binary or service is not present, the vulnerability cannot be exploited
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Check security patch levelGo to Settings > About Phone > Security patch level, or run 'getprop ro.build.version.security_patch' via ADB shellAffected if If the security patch level is earlier than May 2025, the device likely has the unpatched vulnerable version; patch level May-2025 Release 1 or later contains the fix
A Samsung Android device on version 13.0, 14.0, or 15.0 with the sepunion service present and a security patch level before May-2025 Release 1 is affected by this privilege escalation vulnerability.
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 · scopedApply the Samsung SMR May-2025 Release 1 or later security patch, which contains the fix for the sepunion service permission handling vulnerability.
SMR May-2025 Release 1
- Check current Android version by going to Settings > About Phone > Android version
- Go to Settings > Software update > Download and install
- Ensure the device is connected to Wi-Fi and has sufficient battery
- Download and install the SMR May-2025 Release 1 or later update
- Restart the device after the update completes
- Verify the update was applied by checking Settings > Software update > Android version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation4.0 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 $4,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-20961 — 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-2025-20961 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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