CVE-2018-0300

N/A
Published: June 21, 2018 at 11:00 AM UTC
Updated: June 17, 2026 at 01:30 AM UTC
6 products affected across 1 vendorFxosFirepower 4110Firepower 4140

Using Cisco Firepower 4100 Series Next-Generation Firewall and Firepower 9300 Security Appliance unknown by N/A?

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Severity
N/A
Exploit prediction
EPSS 7%
SSVC
No known exploit

Description

A vulnerability in the process of uploading new application images to Cisco FXOS on the Cisco Firepower 4100 Series Next-Generation Firewall (NGFW) and Firepower 9300 Security Appliance could allow an authenticated, remote attacker using path traversal techniques to create or overwrite arbitrary files on an affected device. The vulnerability is due to insufficient validation during the application image upload process. An attacker could exploit this vulnerability by creating an application image containing malicious code and installing the image on the affected device using the CLI or web-based user interface (web UI). These actions occur prior to signature verification and could allow the attacker to create and execute arbitrary code with root privileges. Note: A missing or invalid signature in the application image will cause the upload process to fail, but does not prevent the exploit. Cisco Bug IDs: CSCvc21901.

Affected

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

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

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Confidentiality
COMPLETE
Integrity
COMPLETE
Availability
COMPLETE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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