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Juniper Networks PTX Vulnerability Enables Full Router Takeover

Cybersecuritynews •Abinaya • February 27, 2026

A major networking vendor has issued an out-of-cycle security bulletin to address a critical vulnerability in its Junos OS Evolved software, specifically affecting PTX Series platforms. This flaw, identified as CVE-2026-21902, allows an unauthenticated, remote attacker to execute arbitrary code as the ‘root’ user, effectively granting them complete control over the affected device. The vulnerability […]

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Critical Vulnerability in Juniper PTX Routers Allows Remote Code Execution A critical vulnerability identified as CVE-2026-21902 affects the Junos OS Evolved on PTX Series routers, enabling unauthenticated attackers to execute code with root privileges. These routers are widely used by internet service providers and cloud applications, making this flaw particularly significant for network security. The vulnerability was published on February 25, 2026. 15 sources 66

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Juniper Networks PTX Vulnerability Enables Full Router Takeover

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