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Threat Intelligence Report

ATT&CKing TACACS+ to Pwn Your Network via a Pre-Auth RCE

๐Ÿ“… September 25, 2026 ๐Ÿ“ฐ www.elttam.com ๐Ÿ” 2 CVE(s) referenced

A 25-year-old pre-authentication format-string flaw in tac_plus, chained with a PSK oracle, enables remote root code execution against critical TACACS+ authentication infrastructure and demands immediate upgrade to F4.0.4.32.

unclassified
CVE-2023-45239, CVE-2023-48643

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