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

Severity: critical (CVSS 9.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-20 · updated 2026-10-18
Weakness: CWE-119

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.

Affected products

Comfast CF-N1-S: 2.6.0.1

References

https://github.com/AdminSafe/CVE/issues/5
https://vuldb.com/cve/CVE-2026-77022
https://vuldb.com/submit/880599
https://vuldb.com/vuln/393637
https://vuldb.com/vuln/393637/cti

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