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NetextenderApplication · Sonicwall

CVE-2023-44217

HIGH · 7.8 CVSS v3.1 Published 2023-10-03
Fix available
A fix is available. Upgrade to after 10.2.336 or later.
See remediation →
80/100
Remediation priority · High
Zero-click

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 · unedited
A local privilege escalation vulnerability in SonicWall Net Extender MSI client for Windows 10.2.336 and earlier versions allows a local low-privileged user to gain system privileges through running repair functionality.

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 confidence

A local privilege escalation vulnerability in the SonicWall Net Extender MSI client for Windows allows a low-privileged local user to gain system privileges by exploiting the repair functionality. The vulnerability exists in versions 10.2.336 and earlier, where improper handling of repair operations likely grants elevated permissions to the requesting user.

MitigationUpdate SonicWall Net Extender client to a version newer than 10.2.336. If immediate patching is not feasible, restrict local user permissions or consider disabling the client on non-essential systems.

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
NetextenderApplication
Affected:<= 10.2.336

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
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 checks

Work through these to decide whether this CVE applies to you.

  1. Verify SonicWall Net Extender installation
    Open Control Panel > Programs and Features, or run 'Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -like "*Netextender*"}' in PowerShell to list installed products
    Affected if The application appears in the installed programs list
  2. Determine installed version
    In Programs and Features, locate SonicWall Net Extender and note the version column, or right-click the MSI file and check Properties > Details for version information
    Affected if Version number displayed is 10.2.336 or lower
  3. Confirm MSI client variant
    Check if the installed package is an MSI installer by examining the installation location (typically C:\Program Files\SonicWall\Net Extender or C:\Program Files (x86)\SonicWall\Net Extender) for the client executable
    Affected if The Net Extender client executable exists in the expected program directory, confirming the MSI client is installed
  4. Verify repair functionality access
    Attempt to run 'msiexec /fa {product-code}' where product-code corresponds to the SonicWall Net Extender MSI, or check if a standard user can access the repair option via Windows Installer
    Affected if Repair operations can be initiated by a non-administrator user account

If SonicWall Net Extender version 10.2.336 or earlier is installed as the MSI client, the environment is vulnerable to local privilege escalation via the repair functionality.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to a release after 10.2.336
Interim mitigation

Update SonicWall Net Extender client to a version newer than 10.2.336. If immediate patching is not feasible, restrict local user permissions or consider disabling the client on non-essential systems.

Recommended fix Moderate confidence

SonicWall Net Extender version 10.2.337 or later (verify latest version from official SonicWall sources)

  1. 1. Verify the current installed version of SonicWall Net Extender by opening the application or checking Programs and Features in Control Panel
  2. 2. Download the latest version of SonicWall Net Extender from the official SonicWall support website (psirt.global.sonicwall.com) or authorized distribution channels
  3. 3. Uninstall the current version of Net Extender before installing the updated version, or use the update mechanism if available
  4. 4. Install the updated Net Extender client with appropriate administrative privileges
  5. 5. Verify the installation completed successfully and note the new version number
Caveat Minor - ensure VPN configurations are backed up before reinstallation; some enterprise deployments may require IT administrator coordination

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Netextender Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA1.0 h
10.0 hours of engineering $1,750
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-44217 in production — separate from our analysis above.

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What this is

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.

What belongs here
  • 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