CVE-2018-15390

Cisco Firepower Threat Defense Software FTP Inspection Denial of Service Vulnerability

MEDIUM
6.8
CVSS Score
Published: October 5, 2018 at 02:00 PM UTC
Updated: August 11, 2026 at 07:33 PM UTC
1 product affected across 1 vendorSecure Firewall Threat Defense

Using Cisco Firepower Threat Defense Software by Cisco?

Get instant alerts when new vulnerabilities affect Cisco Firepower Threat Defense Software - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.8
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

A vulnerability in the FTP inspection engine of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software fails to release spinlocks when a device is running low on system memory, if the software is configured to apply FTP inspection and an access control rule to transit traffic, and the access control rule is associated with an FTP file policy. An attacker could exploit this vulnerability by sending a high rate of transit traffic through an affected device to cause a low-memory condition on the device. A successful exploit could allow the attacker to cause a software panic on the affected device, which could cause the device to reload and result in a temporary DoS condition.

Affected

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

6.2.3.0 ≤ v ≤ 6.2.3.4

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 automatablePartial impact

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

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-399CWE-667

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card