CVE-2025-27811
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 · uneditedA local privilege escalation in the razer_elevation_service.exe in Razer Synapse 4 through 4.0.86.2502180127 allows a local attacker to escalate their privileges via a vulnerable COM interface in the target service.
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 local privilege escalation vulnerability exists in the razer_elevation_service.exe component of Razer Synapse 4 (versions up to 4.0.86.2502180127). The vulnerability stems from a insecure COM interface within the elevation service that allows a local attacker to elevate from standard user privileges to higher system-level privileges.
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<= 4.0.86.2502180127CVSS 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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Locate Razer Synapse 4 installation directoryCheck common installation paths: C:\Program Files\Razer\Synapse4 or C:\Program Files (x86)\Razer\Synapse4. Use PowerShell: Get-ChildItem 'C:\Program Files\Razer' -ErrorAction SilentlyContinue or Get-ChildItem 'C:\Program Files (x86)\Razer' -ErrorAction SilentlyContinueAffected if The Razer\Synapse4 directory exists on the system
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Identify installed Razer Synapse 4 versionLocate the version file in the Synapse4 directory, typically named version.ini or check file properties of Synapse4.exe. Run: (Get-Item 'C:\Program Files\Razer\Synapse4\Synapse4.exe').VersionInfo.FileVersion or the equivalent path for x86 installationsAffected if The version number returned is less than or equal to 4.0.86.2502180127, or the version cannot be determined (older unpatched install)
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Verify razer_elevation_service.exe existsCheck for the elevation service binary in the Synapse4 service directory, typically at C:\Program Files\Razer\Synapse4\services\razer_elevation_service.exe. Run: Test-Path 'C:\Program Files\Razer\Synapse4\services\razer_elevation_service.exe'Affected if The file razer_elevation_service.exe exists in the Synapse4 services folder
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Check if elevation service is runningQuery the Windows service status using: Get-Service -Name '*razer*' or Get-Process | Where-Object {$_.ProcessName -like '*elevation*'}Affected if A Razer-related elevation service process is running or registered as a Windows service
The system is affected if Razer Synapse 4 version 4.0.86.2502180127 or earlier is installed AND the razer_elevation_service.exe component is present and running on the system.
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-supplied patch or upgrade Razer Synapse to a version beyond 4.0.86.2502180127. If patching is not immediately feasible, consider disabling the razer_elevation_service if business operations permit, or implement application control policies to restrict its execution.
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Free · runs locallyCheck whether your project pulls in CVE-2025-27811 — 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-2025-27811 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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- Version or environment caveats, and links to real fixes
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