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Potential Telnet Authentication Bypass (CVE-2026-24061)
Sep 19, 2026 · Domain: Endpoint OS: Linux Use Case: Threat Detection Tactic: Initial Access Tactic: Lateral Movement Resources: Investigation Guide Use Case: Vulnerability Data Source: Elastic Defend Data Source: Elastic Endgame Data Source: Crowdstrike Data Source: SentinelOne Noise: Low Performance: Normal Profile: Recommended Threat: Vulnerability Exploit Rule Type: Event Correlation (EQL) Platform: Linux Vuln: CVE-2026-24061 ·Identifies potential exploitation of a Telnet remote authentication bypass vulnerability (CVE-2026-24061) in GNU Inetutils telnetd. The vulnerability allows unauthenticated access by supplying a crafted
-f <username>value via theUSERenvironment variable, resulting in a login process spawned with elevated privileges.
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Telnet Authentication Bypass via User Environment Variable
Sep 19, 2026 · Domain: Endpoint OS: Linux Use Case: Threat Detection Tactic: Initial Access Tactic: Lateral Movement Resources: Investigation Guide Use Case: Vulnerability Data Source: Auditd Manager Noise: Low Performance: Normal Profile: Recommended Threat: Vulnerability Exploit Rule Type: Event Correlation (EQL) Platform: Linux Vuln: CVE-2026-24061 ·Identifies potential exploitation of a Telnet remote authentication bypass vulnerability (CVE-2026-24061) in GNU Inetutils telnetd. The vulnerability allows unauthenticated access by supplying a crafted
-f <username>value via theUSERenvironment variable, resulting in a login process spawned with elevated privileges.
Read More