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CVE-2026-77683— Comfast CF-N1-S mbox-config system command injection

Quick assessment

Affected
Comfast CF-N1-S
Exploitation
Public or AI PoC available; prioritize validation
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公司的一款无线网络连接设备。 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=ntp_timezone中参数timestr的错误操作，可能导致远程命令注入攻击。

CVSS 9.9 · Critical EPSS 2.89% · P87

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-2026-77683

Vulnerability Information
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Vulnerability Title
Comfast CF-N1-S mbox-config system command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Comfast CF-N1-S 2.6.0.1. Affected by this issue is the function system of the file /cgi-bin/mbox-config?method=SET&section=ntp_timezone. The manipulation of the argument timestr results in command injection. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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公司的一款无线网络连接设备。 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=ntp_timezone中参数timestr的错误操作，可能导致远程命令注入攻击。
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-2026-77683

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 5232 chars
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In-depth vulnerability mechanism
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POC zip download
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III. Intelligence Information for CVE-2026-77683

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Vendor Advisories for CVE-2026-77683 (1)

News Coverage for CVE-2026-77683 (1)

Other References for CVE-2026-77683 (2)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-77683

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