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CVE-2018-0304

CRITICAL

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to read sensitive memory content, create a denial of service (DoS) condition, or execute arbitrary code as root. The vulnerability exists because the affected software insufficiently validates Cisco Fabric Services packet headers. An attacker could exploit this vulnerability by sending a crafted Cisco Fabric Services packet to an affected device. A successful exploit could allow the attacker to cause a buffer overflow or buffer overread condition in the Cisco Fabric Services component, which could allow the attacker to read sensitive memory content, create a DoS condition, or execute arbitrary code as root. This vulnerability affects the following if configured to use Cisco Fabric Services: 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: CSCvd69951, CSCve02459, CSCve02461, CSCve02463, CSCve02474, CSCve04859.

Published: Jun 20, 2018 Modified: Jun 17, 2026
CWE-20 CWE-125

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: NONE User Interaction: NONE Scope: UNCHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products (12)

Vendor Product Version
cisco nexus_7000_firmware 7.3\(2\)d1\(0.49\)
cisco nexus_7000_firmware 8.0\(1\)
cisco nexus_7000_firmware 8.1\(0.112\)s0
cisco nexus_5000_firmware 7.0\(0\)hsk\(0.357\)
cisco nexus_5000_firmware 7.3\(0\)d1\(0.98\)
cisco nexus_5000_firmware 8.1\(0.2\)s0
cisco firepower_9000_firmware r211
cisco firepower_9000_firmware r231
cisco nexus_9000_firmware 8.1\(0\)bd\(0.20\)
cisco nexus_9000_firmware 8.1\(1\)s4
cisco unified_computing_system_firmware 3.1\(3a\)a
cisco unified_computing_system_firmware 7.0\(0\)hsk\(0.357\)

GitHub Security Advisory GHSA-95f8-9g2q-vh9q

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS...

Risk Scores

CVSS Score 9.8 / 10
EPSS Score 8.70%

Top 5% most likely to be exploited

Threat Score 41.8 / 100

Data Sources

NVD EPSS GitHub