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CVE-2026-19976— COMFAST CF-N1-S mbox-config sub_44A968 command injection

Quick assessment

Affected
COMFAST CF-N1-S
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.

Comfast CF-N1-S是中国Comfast公司的一款路由器。 COMFAST CF-N1-S 2.6.0.1版本存在安全漏洞，该漏洞源于对文件/cgi-bin/mbox-config?method=SET&section=ptest_macaddress中参数macaddress的错误操作，可能导致命令注入。

CVSS 6.6 · Medium EPSS 2.05% · P80

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
COMFAST CF-N1-S 2.6.0.1 affected
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I. Basic Information for CVE-2026-19976

Vulnerability Information
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Vulnerability Title
COMFAST CF-N1-S mbox-config sub_44A968 command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in COMFAST CF-N1-S 2.6.0.1. Impacted is the function sub_44A968 of the file /cgi-bin/mbox-config?method=SET&section=ptest_macaddress. Such manipulation of the argument macaddress leads to command injection. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
COMFAST CF-N1-S 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Comfast CF-N1-S是中国Comfast公司的一款路由器。 COMFAST CF-N1-S 2.6.0.1版本存在安全漏洞，该漏洞源于对文件/cgi-bin/mbox-config?method=SET&section=ptest_macaddress中参数macaddress的错误操作，可能导致命令注入。
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
COMFAST CF-N1-S 2.6.0.1 cpe:2.3:a:comfast:cf-n1-s:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19976

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III. Intelligence Information for CVE-2026-19976

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Other References for CVE-2026-19976 (1)

IV. Related Vulnerabilities

Same product: CF-N1-S
Same vendor: COMFAST
Same weakness: CWE-77

V. Comments for CVE-2026-19976

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