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CVE-2018-0306: A vulnerability in the CLI parser of Cisco NX-OS Software could allow an authenticated, local attacker to p...

A vulnerability in the CLI parser of Cisco NX-OS Software could allow an authenticated, local attacker to perform a command-injection attack on an affected device. The vulnerability is due to insufficient input validation of command arguments. An attacker could exploit this vulnerability by injecting malicious command arguments into a vulnerable CLI command. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the affected device. Note: This vulnerability requires that any feature license is uploaded to the device. The vulnerability does not require that the license be used. This vulnerability affects MDS 9000 Series Multilayer Switches, Nexus 1000V Series Switches, Nexus 1100 Series Cloud Services Platforms, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 3600 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCve51693, CSCve91634, CSCve91659, CSCve91663.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2018-0306 is a Cisco NX-OS command-injection issue. An attacker who already has local authenticated CLI access could run arbitrary commands with root privileges on affected switching platforms, but only when any feature license has been uploaded to the device. Exposure is most likely in environments running Cisco NX-OS on listed MDS or Nexus platforms, especially where administrators have uploaded any feature license. Nexus 9000 exposure is limited to standalone NX-OS mode per the CVE description. Treat this as high priority for network infrastructure teams. It is not shown as actively exploited in the bundle, but root command execution on core switching infrastructure can threaten network availability, segmentation, and device integrity if an administrator credential is abused. Mitigation focus: Review Cisco advisory guidance for fixed NX-OS releases and upgrade paths.; Restrict CLI access to trusted administrators and managed jump hosts.; Audit devices for uploaded feature licenses and operational need..

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Potential ATT&CK relevance

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CVE-2018-0306 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aCisco NX-OS unknownCisco NX-OS unknownListed
Weakness

CWE details

CWE-20

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