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CVE-2026-27849— Missing neutralization in Linksys MR9600, Linksys MX4200

Quick assessment

Affected
Linksys MR9600
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.

Linksys MR9600和Linksys MX4200都是美国Linksys公司的产品。Linksys MR9600是一款无线路由器。Linksys MX4200是一个网状网络路由器。 Linksys MR9600 1.0.4.205530版本和Linksys MX4200 1.0.13.210200版本存在安全漏洞，该漏洞源于特殊元素中和缺失，可能导致OS命令注入。

AI Predicted 9.8 Difficulty: Easy EPSS 0.59% · P46

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-27849

Vulnerability Information
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Vulnerability Title
Missing neutralization in Linksys MR9600, Linksys MX4200
Source: CVE Program / CVE List V5
Vulnerability Description
Due to missing neutralization of special elements, OS commands can be injected via the update functionality of a TLS-SRP connection, which is normally used for configuring devices inside the mesh network. This issue affects MR9600: 1.0.4.205530; MX4200: 1.0.13.210200.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Linksys MR9600和Linksys MX4200 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linksys MR9600和Linksys MX4200都是美国Linksys公司的产品。Linksys MR9600是一款无线路由器。Linksys MX4200是一个网状网络路由器。 Linksys MR9600 1.0.4.205530版本和Linksys MX4200 1.0.13.210200版本存在安全漏洞，该漏洞源于特殊元素中和缺失，可能导致OS命令注入。
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
Linksys MR9600 1.0.4.205530 -
Linksys MX4200 1.0.13.210200 -

II. Public POCs for CVE-2026-27849

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III. Intelligence Information for CVE-2026-27849

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Vendor Advisories for CVE-2026-27849 (1)

Same Patch Batch · Linksys · 2026-02-25 · 5 CVEs total

CVE-2026-27847 Missing authentication in Linksys MR9600, Linksys MX4200
CVE-2026-27846 Missing authentication in Linksys MR9600, Linksys MX4200
CVE-2026-27848 Missing neutralization in Linksys MR9600, Linksys MX4200
CVE-2026-27850 Improper verification in Linksys MR9600, Linksys MX4200

IV. Related Vulnerabilities

Same product: MR9600
Same vendor: Linksys
Same weakness: CWE-78

V. Comments for CVE-2026-27849

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