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CVE Record

CVE-2018-0300: A vulnerability in the process of uploading new application images to Cisco FXOS on the Cisco Firepower 410...

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.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2018-0300 affects Cisco Firepower 4100 and 9300 appliances. An authenticated remote user could abuse the application image upload process to create or overwrite files and potentially run code as root before image signature checks stop the upload. Exposure is limited to affected Cisco Firepower 4100 Series NGFW and Firepower 9300 Security Appliance deployments where an authenticated user can access CLI or web UI image upload functions. Prioritize remediation for internet-reachable or broadly accessible management planes. Root-level compromise of firewall appliances can undermine perimeter security, but the known evidence requires authenticated access and does not show confirmed active exploitation. Mitigation focus: Check Cisco advisory guidance for affected FXOS releases and fixed versions.; Restrict CLI and web UI administration to trusted management networks.; Limit image upload privileges to tightly controlled administrator accounts..

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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

Conservative CVE-to-ATT&CK context

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cwe · medium confidence lookup

CWE-22: File access and web shell behavior lookup

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Execution behavior lookup

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File access behavior lookup

The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2018-0300 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 Firepower 4100 Series Next-Generation Firewall and Firepower 9300 Security Appliance unknownCisco Firepower 4100 Series Next-Generation Firewall and Firepower 9300 Security Appliance unknownListed
Weakness

CWE details

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CWE-22 · source CWE mapping

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.