CVE-2018-0302

HIGH

7.8

CVSS Score

Published: June 21, 2018 at 11:00 AM UTC

Updated: June 17, 2026 at 01:30 AM UTC

14 products affected across 1 vendorNx OSFirepower Extensible Operating SystemFirepower 4110

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Severity

HIGH7.8

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

A vulnerability in the CLI parser of Cisco FXOS Software and Cisco UCS Fabric Interconnect Software could allow an authenticated, local attacker to cause a buffer overflow on an affected device. The vulnerability is due to incorrect input validation in the CLI parser subsystem. An attacker could exploit this vulnerability by exceeding the expected length of user input. A successful exploit could allow the attacker to execute arbitrary code with root privileges on the affected system. This vulnerability affects Firepower 4100 Series Next-Generation Firewall, Firepower 9300 Security Appliance, UCS 6100 Series Fabric Interconnects, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvb61099, CSCvb86743.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firepower Extensible Operating System · Cisco

95%

1.1 ≤ v < 1.1.4.1692.0 ≤ v < 2.0.1.135

Affected range stops below 1.1.4.169, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.0.1.135, so it looks safe — our inference, not a vendor statement

cisco-firepower-4110 (environment) · cisco-firepower-4120 (environment) · cisco-firepower-4140 (environment) · cisco-firepower-4150 (environment) · cisco-firepower-9300-security-appliance (environment)

Nx OS · Cisconpm

95%

3.1(1k)a

cisco-ucs-6120xp (environment) · cisco-ucs-6140xp (environment) · cisco-ucs-6248up (environment) · cisco-ucs-6296up (environment) · cisco-ucs-6324 (environment) · cisco-ucs-6332 (environment)

UCS Fabric Interconnect · Cisco

60%

All versions

Firepower 4110 · Ciscodevice

80%

All versions

Firepower 4120 · Ciscodevice

80%

All versions

Firepower 4140 · Ciscodevice

80%

All versions