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CVE-2026-77022— Comfast CF-N1-S SSID Configuration mbox-config sub_44B438 stack-based overflow

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版本存在缓冲区错误漏洞，该漏洞源于对文件/cgi-bin/mbox-config?method=SET&section=ptest_ssid中参数ssid的操作，可能导致栈缓冲区溢出。

CVSS 9.9 · Critical EPSS 0.79% · P56

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-2026-77022

Vulnerability Information
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Vulnerability Title
Comfast CF-N1-S SSID Configuration mbox-config sub_44B438 stack-based overflow
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 sub_44B438 of the file /cgi-bin/mbox-config?method=SET&section=ptest_ssid of the component SSID Configuration. The manipulation of the argument ssid results in stack-based buffer overflow. The attack can be executed 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
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Comfast CF-N1-S 缓冲区错误漏洞
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版本存在缓冲区错误漏洞，该漏洞源于对文件/cgi-bin/mbox-config?method=SET&section=ptest_ssid中参数ssid的操作，可能导致栈缓冲区溢出。
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-2026-77022

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8373 chars
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III. Intelligence Information for CVE-2026-77022

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Proof of Concept for CVE-2026-77022 (2)

Other References for CVE-2026-77022 (2)

Same Patch Batch · Comfast · 2026-08-20 · 3 CVEs total

CVE-2026-77148 9.9 CRITICAL Comfast CF-N1-S Web Management mbox-config sub_44B50C stack-based overflow
CVE-2026-77004 7.4 HIGH Comfast CF-N1-S mbox-config sprintf command injection

IV. Related Vulnerabilities

Same product: CF-N1-S
Same vendor: Comfast
Same weakness: CWE-121

V. Comments for CVE-2026-77022

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