Versions (4)
Version DetailsCurrent
Rev: 2 • Jan 27, 2023, 12:00 PMET EXPLOIT Realtek SDK - Command Execution/Backdoor Access Inbound (CVE-2021-35394)
alert udp any any -> $HOME_NET 9034 (msg:"ET EXPLOIT Realtek SDK - Command Execution/Backdoor Access Inbound (CVE-2021-35394)"; flow:to_server; content:"orf|3b|"; fast_pattern; startswith; threshold:type limit, count 1, seconds 3600, track by_src; reference:cve,2021-35394; reference:url,unit42.paloaltonetworks.com/realtek-sdk-vulnerability/; reference:url,onekey.com/blog/advisory-multiple-issues-realtek-sdk-iot-supply-chain; classtype:attempted-admin; sid:2044008; rev:2; metadata:affected_product IoT, attack_target Networking_Equipment, created_at 2023_01_27, cve CVE_2021_35394, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_12, reviewed_at 2023_08_21;)
Jan 27, 2023, 12:00 PM
Apr 12, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 25, 2025, 9:35 PM
rules/emerging-exploit.rules