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CVE Record

CVE-2018-0311: A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software coul...

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability exists because the affected software insufficiently validates Cisco Fabric Services packets when the software processes packet data. An attacker could exploit this vulnerability by sending a maliciously crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow condition on the device, which could cause process crashes and result in a DoS condition on the device. This vulnerability affects Firepower 4100 Series Next-Generation Firewalls, Firepower 9300 Security Appliance, MDS 9000 Series Multilayer Switches, Nexus 2000 Series Fabric Extenders, Nexus 3000 Series Switches, Nexus 3500 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: CSCvd69960, CSCve02463, CSCve04859, CSCve41530, CSCve41537, CSCve41541, CSCve41557.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2018-0311 can let a remote unauthenticated attacker crash affected Cisco network and security devices by sending malformed Cisco Fabric Services traffic. The business risk is service disruption across firewalls, switches, fabric extenders, and UCS fabric interconnects, not confirmed data theft or code execution. Exposure is most likely in environments running the listed Cisco FXOS or NX-OS platforms. The bundle does not provide exact affected software releases, fixed releases, or configuration prerequisites, so inventory validation against Cisco’s advisory is required. Treat this as a high-priority infrastructure availability issue if affected Cisco platforms support perimeter security, data-center switching, or compute fabric operations. No active exploitation is proven in the provided evidence, but unauthenticated remote DoS against core devices warrants timely validation. Mitigation focus: Identify listed Cisco FXOS and NX-OS platforms in inventory.; Review Cisco’s advisory for affected releases, fixed software, and workarounds.; Prioritize firewalls, core switches, and fabric interconnects supporting critical services..

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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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CWE-399: Exact CWE lookup

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CVE-2018-0311 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.

Source materials

Affected products

Products and packages named in the record

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

CWE details

CWE-399

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.