CVE-2026-78050: Stack-based Buffer Overflow in Comfast CF-N1-S
Description
CVE-2026-78050 is a critical stack-based buffer overflow vulnerability in Comfast CF-N1-S version 2.6.0.1. It affects the Web Management component, specifically the function sub_41AD7C in the /cgi-bin/mbox-config?method=SET§ion=ntp_timezone endpoint. The vulnerability arises from improper handling of the timestr/ntp_client_enabled argument, allowing remote attackers to trigger a buffer overflow. Exploit code has been publicly disclosed, but no confirmed in-the-wild exploitation is reported.
CVSS v4.0
Score 9.4critical
Affected software
Comfast
CF-N1-S
cpe:2.3:a:comfast:cf-n1-s:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Comfast CF-N1-S 2.6.0.1 involves a stack-based buffer overflow in the Web Management interface's function sub_41AD7C, located in the /cgi-bin/mbox-config?method=SET§ion=ntp_timezone endpoint. Remote attackers can manipulate the timestr/ntp_client_enabled parameter to cause a buffer overflow, potentially leading to arbitrary code execution or denial of service. The vulnerability has a CVSS 4.0 score of 9.4, indicating critical severity. Public exploit code exists, but no active exploitation has been confirmed. No official patch or remediation guidance is currently available from the vendor.
Potential Impact
Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary code or cause a denial of service on the affected device. Given the critical CVSS score and the nature of a stack-based buffer overflow, the impact is severe, potentially compromising device integrity and availability.
Mitigation Recommendations
No official patch or remediation has been confirmed at this time. Users should monitor vendor advisories for updates and consider restricting access to the Web Management interface to trusted networks to reduce exposure. Given the public availability of exploit code, heightened vigilance is recommended until a fix is released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-22T08:08:41.778Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a8a2f40acd9273b49a4abdc
Added to database: 08/22/2026, 23:22:40 UTC
Last enriched: 09/10/2026, 13:22:22 UTC
Last updated: 10/07/2026, 06:48:18 UTC
Views: 191
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