ET EXPLOIT Telnet SLC Option Data Buffer Overflow Attempt (CVE-2026-32746)

Query · suricata

flow:established,to_server;
content:"|ff fa 22|"; fast_pattern;
content:"|ff f0|"; distance:109;
target:dest_ip;
Raw source ET EXPLOIT Telnet SLC Option Data Buffer Overflow Attempt (CVE-2026-32746) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any any -> $HOME_NET 23 (
    msg:"ET EXPLOIT Telnet SLC Option Data Buffer Overflow Attempt (CVE-2026-32746)";
    flow:established,to_server;
    content:"|ff fa 22|"; fast_pattern;
    content:"|ff f0|"; distance:109;
    reference:url,labs.watchtowr.com/a-32-year-old-bug-walks-into-a-telnet-server-gnu-inetutils-telnetd-cve-2026-32746/;
    reference:cve,2026-32746;
    classtype:web-application-attack;
    sid:2068415; rev:1;
    metadata:affected_product telnetd, attack_target Server, tls_state plaintext, created_at 2026_03_25, cve CVE_2026_32746, deployment Perimeter, deployment Internal, performance_impact Low, confidence Medium, signature_severity Major, tag Exploit, updated_at 2026_03_25, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)

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