CVE-2023-25493
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 potential vulnerability was reported in the BIOS update tool driver for some Desktop, Smart Edge, Smart Office, and ThinkStation products that could allow a local user with elevated privileges 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 · moderate confidenceA vulnerability exists in the BIOS update tool driver for certain Desktop, Smart Edge, Smart Office, and ThinkStation products. The flaw allows a local user with elevated privileges to execute arbitrary code, likely due to insufficient input validation or improper access controls within the driver during the BIOS update process.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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 system product typeRun 'systeminfo' or check the system BIOS/UEFI for the product name. For Lenovo systems, run 'wmic csproduct get name' or check the product label.Affected if The system is a Lenovo Desktop, Smart Edge, Smart Office, or ThinkStation model
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Locate the BIOS update tool driverSearch for BIOS update utility files and drivers. Common driver names include 'sbios', 'biosupd', 'lenovo_sbios', or similar. Check locations like C:\Windows\System32\drivers\ and the vendor tool installation directory.Affected if A Lenovo BIOS update driver file exists on the system (e.g., sbios.sys, biosupd.sys)
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Check if the vulnerable driver is loadedRun 'driverquery /v' or 'sc query' to list loaded drivers. Look for BIOS update-related drivers in the output.Affected if A BIOS update driver is currently loaded in memory
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Determine the driver or tool versionRight-click the driver file, select Properties, then Details to view the File Version. For the BIOS update tool, run the executable with a version flag (e.g., 'toolname /ver' or check Add/Remove Programs).Affected if The installed driver/tool version falls within an affected range or cannot be determined (unknown version)
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Verify driver file integrityCheck the digital signature of the driver file using 'signtool verify /v /pa C:\path\to\driver.sys' or right-click Properties > Digital Signatures.Affected if The driver is not digitally signed by Lenovo or shows an invalid signature
The system is likely affected if it is a Lenovo Desktop, Smart Edge, Smart Office, or ThinkStation with a BIOS update driver present and the driver version is not confirmed as patched.
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 BIOS/firmware update to patch the vulnerable driver. If the update tool is not required, consider disabling or removing it to reduce the attack surface.
- Consultation6.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-25493 — 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-2023-25493 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
- No spam, self-promotion, credentials, or personal data