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CVE-2018-0092: A vulnerability in the network-operator user role implementation for Cisco NX-OS System Software could allo...

A vulnerability in the network-operator user role implementation for Cisco NX-OS System Software could allow an authenticated, local attacker to improperly delete valid user accounts. The network-operator role should not be able to delete other configured users on the device. The vulnerability is due to a lack of proper role-based access control (RBAC) checks for the actions that a user with the network-operator role is allowed to perform. An attacker could exploit this vulnerability by authenticating to the device with user credentials that give that user the network-operator role. Successful exploitation could allow the attacker to impact the integrity of the device by deleting configured user credentials. The attacker would need valid user credentials for the device. This vulnerability affects the following Cisco products running Cisco NX-OS System Software: Nexus 3000 Series Switches, Nexus 3600 Platform Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCvg21120.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

A user with Cisco NX-OS network-operator privileges may be able to delete other configured user accounts, which should be outside that role's authority. This is not an unauthenticated internet attack; the attacker needs valid device credentials. Business risk is disruption of administrative access and loss of device-account integrity on affected Nexus platforms. Exposure is limited to affected Cisco Nexus devices running NX-OS where an attacker can authenticate with network-operator role credentials. Environments with shared operator accounts, weak AAA controls, or broad device-login access face higher practical risk. Treat as a targeted access-control risk, not an emergency internet-wide exposure. Prioritize devices supporting critical network paths and environments where many staff or service accounts hold network-operator access. Mitigation focus: Review Cisco advisory cisco-sa-20180117-nxos1 for fixed releases and vendor guidance.; Upgrade affected NX-OS deployments according to Cisco guidance where applicable.; Limit network-operator role assignment to named, necessary users only..

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Potential ATT&CK relevance

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CVE-2018-0092 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

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0CVSS vectors
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2Source links

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Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aCisco NX-OSCisco NX-OSListed
Weakness

CWE details

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Permissions, Privileges, and Access Controls

Permissions, Privileges, and Access Controls represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.