CVE-2026-78050 Comfast CVE debrief

Who should care

Defenders responsible for Comfast CF-N1-S 2.6.0.1 devices, especially those with remote access enabled, should assess exposure and verify the effectiveness of current security controls. IT teams and security professionals managing network infrastructure should prioritize verifying inventory and implementing compensating controls.

Why it matters

CVE-2026-78050 is a stack-based buffer overflow vulnerability in the Comfast CF-N1-S 2.6.0.1 device, allowing remote attackers to potentially execute arbitrary code. Defenders should prioritize verifying exposure, assessing security controls, and implementing compensating controls.

• Verify exposure of Comfast CF-N1-S 2.6.0.1 devices to potential stack-based buffer overflow attacks.
• Assess the effectiveness of current security controls in preventing remote attacks.
• Monitor for potential exploitation attempts using network traffic analysis and intrusion detection systems.
• Consider implementing compensating controls, such as Web Application Firewalls (WAFs), to detect and prevent attacks.

Technical summary

The vulnerability affects the Comfast CF-N1-S 2.6.0.1 device, specifically the Web Management component. The function sub_41AD7C in the file /cgi-bin/mbox-config?method=SET&section=ntp_timezone is vulnerable to stack-based buffer overflow attacks due to improper handling of the timestr/ntp_client_enabled argument. This allows remote attackers to potentially execute arbitrary code. The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected product. However, the vendor and product names are not confirmed, and the exploit's impact requires further verification. Defenders should prioritize verifying exposure of Comfast CF-N1-S 2.6.0.1 devices, especially

Defensive priority

Defenders should prioritize verifying exposure of Comfast CF-N1-S 2.6.0.1 devices, especially those with remote access enabled, and assess the effectiveness of current security controls in preventing stack-based buffer overflow attacks.

Recommended defensive actions

• Verify exposure of Comfast CF-N1-S 2.6.0.1 devices, especially those with remote access enabled.
• Assess the effectiveness of current security controls in preventing stack-based buffer overflow attacks.
• Monitor for potential exploitation attempts using network traffic analysis and intrusion detection systems.
• Consider implementing compensating controls, such as Web Application Firewalls (WAFs), to detect and prevent attacks.
• Review vendor patch guidance and apply updates if available.
• Conduct an asset inventory to identify potentially affected systems.
• Track exceptions and retest remediated assets to ensure successful mitigation.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected product. However, the vendor and product names are not confirmed, and the exploit's impact requires further verification.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.