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CVE-2026-94003 Comfast CVE debrief

A vulnerability has been found in Comfast CF-N1-S 2.6.0.1, impacting the function get_css_path_from_uri of the file /cgi-bin/mbox-config in the Web Management Interface. This results in a stack-based buffer overflow, which can be exploited remotely. Defenders should assess exposure and potential vulnerabilities, especially in configurations with remote access enabled. The CVE record and NVD entry provide limited information, with no details on affected or fixed versions, or remediation strategies.

Vendor
Comfast
Product
CF-N1-S
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-20
Original CVE updated
2026-09-20
Advisory published
2026-09-20
Advisory updated
2026-09-20

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 potential vulnerabilities. They should prioritize verifying exposure of these devices and evaluating the Web Management Interface for potential vulnerabilities due to the stack-based buffer overflow vulnerability. Security teams and vulnerability management teams should also review the CVE and NVD information to determine the  

Why it matters

Defenders should prioritize verifying exposure of Comfast CF-N1-S 2.6.0.1 devices, especially those with remote access enabled, and assess the Web Management Interface for potential vulnerabilities due to the stack-based buffer overflow vulnerability.

  • Verify exposure of Comfast CF-N1-S 2.6.0.1 devices
  • Assess the Web Management Interface for potential vulnerabilities
  • Monitor for potential remote attacks

Technical summary

The vulnerability is a stack-based buffer overflow in the get_css_path_from_uri function of the /cgi-bin/mbox-config file in the Web Management Interface of Comfast CF-N1-S 2.6.0.1. The attack can be initiated remotely, and defenders should prioritize verifying exposure and assessing potential vulnerabilities in the Web Management Interface. The vulnerability's impact on the system and potential defensive measures should be evaluated based on the provided CVE and NVD information. The Web Management Interface's functionality and potential weaknesses should be reviewed.

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 Web Management Interface for potential vulnerabilities.

Recommended defensive actions

  • Verify exposure of Comfast CF-N1-S 2.6.0.1 devices
  • Assess the Web Management Interface for potential vulnerabilities
  • Monitor for potential remote attacks
  • Review compensating controls for exposed systems
  • Check relevant monitoring, detection, and logs for exposed assets
  • Track exceptions and retest remediated assets
  • Plan vendor-supported updates or mitigations through normal change control

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. There are no additional details on affected or fixed versions, or potential remediation. Defenders should verify exposure of Comfast CF-N1-S 2.6.0.1 devices, especially those with remote access enabled, and assess the Web Management Interface for potential vulnerabilities due to the stack-based buffer overflow vulnerability. Evidence is limited, and further verification is required.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-94003 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-94003

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-94003 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-94003

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.