CVE-2025-9584: A vulnerability was found in Comfast CF-N1 2.6.0. Affected by this issue is the function update_interface_png of the file /usr/bin/webmgnt. The manipulation of…

PriorityP272high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

8.32%

94.2th percentile

A vulnerability was found in Comfast CF-N1 2.6.0. Affected by this issue is the function update_interface_png of the file /usr/bin/webmgnt. The manipulation of the argument interface/display_name results in command injection. The attack can be executed remotely. The exploit has been made public and could be used.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
comfast	cf-n1	—	—
comfast	cf-n1_firmware	—	—

Detection & IOCsextracted from sources · hover to see the quote

url/cgi-bin/mbox-config?method=SET&section=update_interface_png↗

path/cgi-bin/mbox-config↗

path/usr/bin/webmgnt↗

snort

alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS ComFast mbox-config update_interface_png Multiple Parameters Command Injection Attempt (CVE-2025-9584)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/cgi-bin/mbox-config|3f|"; fast_pattern; startswith; content:"method|3d|SET"; content:"section|3d|update_interface_png"; http.request_body; pcre:"/\x22(?:interface|display_name)\x22+(?:\x3a(?:\x20\x22|\x22))?[^\x2c\x7d$]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/"; reference:url,github.com/jinhao118/cve/blob/main/ComFast%20CF-AC100-V2.6.0.8_4.md; reference:cve,2025-9584; classtype:attempted-admin; sid:2068155; rev:1; metadata:affected_product ComFast, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_03_11, cve CVE_2025_9584, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_03_11, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)

→Look for HTTP POST requests to /cgi-bin/mbox-config with query parameters method=SET and section=update_interface_png — this is the specific endpoint targeted by the exploit.
→Inspect the HTTP request body for JSON fields 'interface' or 'display_name' containing shell metacharacters: semicolon (;/%3B), newline (\n/%0A), backtick (`/%60), pipe (|/%7C), or dollar sign ($/%24) — these are the command injection vectors.
→The vulnerable function is update_interface_png inside /usr/bin/webmgnt on Comfast CF-N1 2.6.0; the injection point is the interface/display_name argument.
→The exploit is public (PoC published on GitHub). Prioritize detection at the network perimeter and internally for this plaintext HTTP attack against networking equipment.

·The Snort/Suricata rule (ET sid:2068155) targets plaintext HTTP only (tls_state plaintext); if the device is ever accessed over HTTPS/TLS, this rule will not fire and additional SSL inspection would be required.
·The attack is remotely exploitable with no authentication mentioned; ensure the device management interface is not exposed to untrusted networks.

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvdv4.02.1LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvdv2.06.5MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P

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