ET WEB_SPECIFIC_APPS H3C aaa_portal_auth_local_submit suffix Parameter Command Injection Attempt (CVE-2026-3943)
Sourceet/open
CreatedMarch 11, 2026
UpdatedMarch 11, 2026
Classificationattempted-admin
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS H3C aaa_portal_auth_local_submit suffix Parameter Command Injection Attempt (CVE-2026-3943)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/webui/|3f|aaa_portal_auth_local_submit"; startswith; fast_pattern; content:"suffix|3d|"; distance:0; pcre:"/^[^\x26]*?(?:(?:\x3b|%3[Bb])|(?:\x0a|%0[Aa])|(?:\x60|%60)|(?:\x7c|%7[Cc])|(?:\x24|%24))+/R"; reference:url,github.com/leeyper/CVE/issues/1; reference:cve,2026-3943; classtype:attempted-admin; sid:2068151; rev:1; metadata:affected_product H3C, attack_target Networking_Equipment, tls_state plaintext, created_at 2026_03_11, cve CVE_2026_3943, 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;)
References
Metadata
affected productH3C
attack targetNetworking_Equipment
tls stateplaintext
created at2026_03_11
deploymentInternal
performance impactLow
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_03_11
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application
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