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CVE Record

CVE-2018-0291: A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco NX-OS Soft...

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application on an affected device to restart unexpectedly. The vulnerability is due to improper validation of SNMP protocol data units (PDUs) in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition. This vulnerability affects Nexus 2000 Series Switches, 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, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCuw99630, CSCvg71290, CSCvj67977.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

This vulnerability lets an authenticated remote attacker crash the SNMP process on affected Cisco NX-OS devices. Repeated crashes can trigger a full device restart, creating a denial-of-service risk for switching and fabric-interconnect infrastructure. Exposure is most likely where affected Cisco Nexus or UCS Fabric Interconnect devices run NX-OS with SNMP enabled and reachable by authenticated users or systems. Internet exposure is not stated in the sources. Prioritize this where affected Cisco infrastructure supports production networks. The risk is outage-oriented rather than data theft, but a device restart on core switching or fabric infrastructure can disrupt business operations. Mitigation focus: Review Cisco’s advisory for affected releases and fixed software guidance.; Restrict SNMP access to trusted management networks and systems.; Audit SNMP credentials, communities, and authorized monitoring integrations..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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CVE-2018-0291 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

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Affected products

Products and packages named in the record

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

CWE details

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Improper Input Validation

Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.