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CVE-2026-66153

Quick assessment

Affected
SonicWall NetExtender
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SonicWALL NetExtender是美国SonicWALL公司的一款远程访问VPN客户端软件。 SonicWALL NetExtender 10.3.5及之前版本存在后置链接漏洞，该漏洞源于NEService自动升级进程不安全地处理临时文件，允许攻击者操纵文件路径。

AI Predicted 7.8 Difficulty: Easy EPSS 0.24% · P13

Possible ATT&CK Techniques 1 AI

T1553.005 · Mark-of-the-Web Bypass

Affected Version Matrix 1

VendorProduct Version RangeStatus
SonicWall NetExtender 10.3.5 and earlier versions affected
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I. Basic Information for CVE-2026-66153

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The NEService auto-upgrade process insecurely handles temporary files in SonicWall NetExtender Linux client which allows an attacker to manipulate file paths.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
SonicWALL NetExtender 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SonicWALL NetExtender是美国SonicWALL公司的一款远程访问VPN客户端软件。 SonicWALL NetExtender 10.3.5及之前版本存在后置链接漏洞，该漏洞源于NEService自动升级进程不安全地处理临时文件，允许攻击者操纵文件路径。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SonicWall NetExtender 10.3.5 and earlier versions -

II. Public POCs for CVE-2026-66153

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-66153

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Vendor Advisories for CVE-2026-66153 (1)

IV. Related Vulnerabilities

Same product: NetExtender
Same vendor: SonicWall
Same weakness: CWE-59

V. Comments for CVE-2026-66153

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