CVE-2025-9581: Comfast CF-N1 webmgnt multi_pppoe command injection

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-08-28 · updated 2026-09-26
Weakness: CWE-74

Description

A vulnerability was detected in Comfast CF-N1 2.6.0. This impacts the function multi_pppoe of the file /usr/bin/webmgnt. Performing manipulation of the argument phy_interface results in command injection. The attack may be initiated remotely. The exploit is now public and may be used.

Affected products

Comfast CF-N1: 2.6.0

References

https://github.com/ZZ2266/.github.io/tree/main/COMFAST/N1V2/multi_pppoe
https://vuldb.com/?ctiid.321694
https://vuldb.com/?id.321694
https://vuldb.com/?submit.636127
https://github.com/ZZ2266/.github.io/tree/main/COMFAST/N1V2/multi_pppoe

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