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CVE-2024-20399 is a command injection vulnerability in the command-line interface of Cisco NX-OS Software. The flaw is caused by insufficient validation of arguments passed to specific configuration CLI commands. An authenticated user with Administrator credentials can supply crafted input to an affected configuration command and cause arbitrary commands to be executed on the underlying operating system as root. The issue affects Cisco NX-OS-based platforms including affected Nexus and MDS series devices. On some platforms, such as Nexus 3000, Nexus 7000 running Cisco NX-OS 8.1(1) and later, and Nexus 9000 in standalone NX-OS mode, administrative users may already have bash-shell access, so exploitation may not increase privileges on those systems, but it still enables direct OS-level command execution through the vulnerable CLI path.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Cisco NX-OS zero-day vulnerability that Velvet Ant exploited to deploy the VELVETSHELL backdoor on Cisco Nexus switches.
A Cisco NX-OS vulnerability used by Velvet Ant to plant a backdoor on switches after administrative access was already obtained, functioning as a persistence mechanism rather than an initial remote compromise vector.
A Cisco NX-OS vulnerability that allows an authenticated administrator to execute arbitrary commands with root-level access via manipulated CLI input.
A CLI command injection vulnerability in Cisco NX-OS switches.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.