CVE-2026-2640
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 · uneditedDuring an internal security assessment, a potential vulnerability was discovered in Lenovo PC Manager that could allow a local authenticated user to terminate privileged processes.
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 authenticated user can terminate privileged processes in Lenovo PC Manager due to insufficient access control on process termination functionality. This allows a standard user to kill system or elevated processes, potentially causing denial of service or aiding in further attack chains.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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.
-
Identify if Lenovo PC Manager is installedCheck for Lenovo PC Manager in program files (C:\Program Files\Lenovo\Lenovo PC Manager or C:\Program Files (x86)\Lenovo\Lenovo PC Manager) or query the Windows registry under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall for entries containing 'Lenovo PC Manager'Affected if Lenovo PC Manager is found installed on the system
-
Determine installed version of Lenovo PC ManagerRight-click the Lenovo PC Manager executable in Program Files, select Properties, then look at the Details tab for the File Version, or query the registry uninstall key for the DisplayVersion valueAffected if The installed version matches or falls within any affected version range (compare against Lenovo's official security advisory for this CVE)
-
Verify current user account typeRun 'whoami /groups' or check System Properties to confirm if the current account is a standard user (not an administrator)Affected if The user is a standard (non-privileged) local account
-
Test process termination from standard user contextAs a standard (non-admin) user, attempt to terminate a privileged or system process (such as a service running under SYSTEM or a known elevated process) using Task Manager, Taskkill command, or Process Explorer - verify if termination succeeds without UAC promptAffected if A standard user can successfully terminate privileged or system processes through Lenovo PC Manager functionality
-
Check for event logs indicating process termination abuseReview Windows Security event logs (Event Viewer > Windows Logs > Security) and Lenovo PC Manager logs in %ProgramData%\Lenovo\ LenovoPCManager\logs for event ID 4689 (process termination) or suspicious termination patterns originating from standard user sessionsAffected if Event logs show privileged process terminations initiated by standard user accounts
A system is affected if Lenovo PC Manager is installed and a standard (non-administrator) user can successfully terminate privileged or system processes due to missing access controls.
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 dataRestrict process termination functionality to only allow users with appropriate privileges to terminate protected processes, or implement proper authorization checks before allowing process termination.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-2640 — 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-2026-2640 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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