CVE-2026-66153
Received Received - Intake

Insecure File Path Handling in SonicWall NetExtender Linux Client

Publication date: 2026-08-25

Last updated on: 2026-08-25

Assigner: SonicWALL, Inc.

Description
The NEService auto-upgrade process insecurely handles temporary files in SonicWall NetExtender Linux client which allows an attacker to manipulate file paths.

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Meta Information

Published
2026-08-25
Last Modified
2026-08-25
Generated
2026-08-26
AI Q&A
2026-08-25
EPSS Evaluated
N/A
NVD
CVE-2026-66153

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
sonicwall netextender *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-59 The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

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Executive Summary

This vulnerability involves the NEService auto-upgrade process in the SonicWall NetExtender Linux client. It insecurely handles temporary files, allowing an attacker to manipulate file paths during the upgrade process.

Impact Analysis

An attacker could exploit this to replace legitimate files with malicious ones during an upgrade, potentially leading to unauthorized code execution or system compromise on the affected Linux client.

Mitigation Strategies

Disable the NEService auto-upgrade process in SonicWall NetExtender Linux client until a patch is available. Monitor SonicWall's official advisories for updates and apply patches immediately when released.

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