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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.

在 Comfast CF-N1-S 2.6.0.1 版本中发现了一个安全漏洞。受此问题影响的是组件“SSID 配置”（SSID Configuration）中的文件 的函数 。该漏洞源于对参数 的不当处理，导致基于栈的缓冲区溢出。此漏洞可被远程利用，且相关利用代码已公开，可能被攻击者用于实施攻击。

CVSS 9.9 · Critical EPSS 0.46% · P38

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

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
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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 (1)

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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