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Critical Cisco Nexus 9000 Flaw Lets Unauthenticated Attackers Execute Code as Root

Cyber Press
Cyber Press
Published September 3, 2026Original Report

Excerpt

Cisco has disclosed a critical remote code execution vulnerability in Nexus 9000 Series Switches equipped with Silicon One ASICs that could allow unauthenticated attackers to run arbitrary code with root privileges. Tracked as CVE-2026-20212, the flaw received a CVSS v3.1 score of 9.8 out of 10 and is documented in Cisco advisory cisco-sa-n9k-s1-rce-EH8dEtr. Cisco published the final advisory on September 2, 2026, and released software updates and temporary mitigations for…

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Indicators of Compromise

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1 indicators

TypeIndicatorConfidenceScoreFirst Seen
CVECVE-2026-20212MediumScore 54/100First seen

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