ET WEB_SPECIFIC_APPS D-Link system_mgr.cgi Multiple Parameters Command Injection Attempt (CVE-2026-8273)
Sourceet/open
Fileemerging-web_specific_apps.rules
CreatedAugust 27, 2026
UpdatedAugust 27, 2026
Classificationattempted-admin
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS D-Link system_mgr.cgi Multiple Parameters Command Injection Attempt (CVE-2026-8273)"; flow:established,to_server ; http.method; content:"POST"; http.uri; content:"/cgi-bin/system_mgr.cgi"; fast_pattern; http.request_body; content:"cmd|3d|"; pcre:"/^cgi\x5f(?:set\x5f(?:host|ntp)|fan\x5fcontrol|merge\x5fuser)/R" ; pcre:"/hostname|total|f\x5f(?:fan\x5ftype|ntp\x5fserver)\x3d[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/P" ; reference:cve,2026-8273 ; reference:url,github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/D-Link%20DNS-320%20%20system_mgraccount_mgrdsk_mgrapp_mgr%20Multiple%20CGI%20OS%20Command%20Injection.md ; classtype:attempted-admin; sid:2071828; rev:1; metadata:affected_product D_Link, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_08_27, cve CVE_2026_8273, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2026_08_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
References
Metadata
affected productD_Link
attack targetNetworking_Equipment
tls stateplaintext
created at2026_08_27
deploymentInternal
performance impactLow
confidenceHigh
signature severityMajor
tagExploit
updated at2026_08_27
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application
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