CVE-2026-42542

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

September 25, 2026

Last Seen

September 25, 2026

API

Exploited in Wild

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Ransomware Use

—

Public Exploits

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Attack Vector

—

Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Critical RCE Vulnerability Discovered in TACACS+ Protocol78.7

A significant vulnerability has been identified in the TACACS+ protocol, allowing for pre-authentication remote code execution (RCE) attacks. This 33-year-old protocol, crucial for authentication in networking equipment, is widely used across large enterprises and ISPs. The vulnerability, detailed b...